Meteorologists in Texas want to increase the amount of rain delivered by thunderheads by seeding the clouds. Without seeding, thunderheads produce, on average, 300 acrefeet. The meteorologists randomly selected 30 clouds which they seeded with silver iodide to test their theory that average acrefeet is more than 300. The sample mean is 370.4 with a sample standard deviation of 300.1. (a) Estimate the p-value _____________ (b) What conclusion can be drawn when the significance level is 0.05? 1. The data does not provided statistical evidence that the average acrefeet from seeded clouds is more than 300. 2. The data does provide statistical evidence that the average acrefeet from seeded clouds is more than 300. 3. The data does not provided statistical evidence that the sample average acrefeet from seeded clouds is more than 300. 4. Two of the above are correct. -We can not draw conclusions based on the p-value because the conditions are not met due to the extreme outliers.

Answers

Answer 1

a) The p-value is approximately 0.077.

b) A conclusion which can be drawn when the significance level is 0.05 is The data does not provide statistical evidence that the average acre-feet from seeded clouds is more than 300. So, the correct answer is option 1.

To answer this question, we will first perform a one-sample t-test to find the test statistic and p-value.

(a) Given the information, we have the following values:

Using a t-table or calculator, we find the one-tailed p-value for t = 1.45 and degrees of freedom (df) = n - 1 = 29.

The p-value is approximately 0.077.

(b) When the significance level is 0.05, we compare the p-value (0.077) to the significance level (α = 0.05).

Since the p-value is greater than the significance level, we fail to reject the null hypothesis.

Therefore, the correct conclusion is: 1. The data does not provide statistical evidence that the average acre-feet from seeded clouds is more than 300.

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Related Questions

1. Positive
2. Negative
3. Zero
4. Undefined

1. Positive2. Negative3. Zero4. Undefined

Answers

Answer:

zero

Step-by-step explanation:

zero graphs are lines that are horizontal.

What is the answer to this problem? I'm in 7th grade algebra and this problem has stumped me. P=2L+2W solve for W

Answers

The solution of the W would be; P/ 2 - L = W

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Start by factoring out the two;

P = 2L + 2W

P = 2(L + W)

Now Divide both sides of the equation by two;

P = 2(L + W)

P/ 2 = 2(L + W)/ 2

P/ 2 = L + W

Then Subtract L from both sides of the equation;

P/ 2 = L + W

P/ 2 - L= W + L - L

P/ 2 - L = W

Therefore, The solution of the W would be; P/ 2 - L = W

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A salesman sells an item for $125. He gets a 20% commission. How
much money did he make?

Answers

Answer:$25

Step-by-step explanation:

20% of 125 is $25 dollars so his commission would be $25

Answer:

25 dollars

Step-by-step explanation:

125/100=1.25

multiply by 20

1.25*20=

25 dollars

He does not get the money for the item because the person is a salesman

Brainliest Please

A student needs at least seven hours of sleep each night. The student goes to bed at 11:00pm and wakes up before 6:30am. Is the student getting enough sleep? Write an inequality for the number of hours of sleep the students gets each night

Answers

The student is getting enough sleep because the student is sleeping for 7 hours 30 minutes. The inequality for the number of hours of sleep is x ≥ 7 hours.

What is the inequality?

For the student to be getting enough sleep, the student has to sleep for greater than 7 hours. The first step is to determine the number of hours slept.

In order to determine the time the student spent sleeping, subtract the time he slept from the time he woke up. Subtraction is the process that is sued to determine the difference between two or more numbers.

The sign that represents subtraction is -. In this case, 6 : 30am - 11 : 00pm = 7 hours 30 minutes. The sign to use is ≥ because the student can sleep for 7 hours or greater.

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The student is getting enough sleep.

The inequality that represents the number of hours a student should sleep each night is s ≥ 7 hours.

What is the inequality?

In order to determine if the student is getting enough sleep, we have to determine the total hours between 11:00pm and 6:30am. The total hours between 11:00pm and 6:30am is 7 hours 30 minutes.  7 hours 30 minutes is greater than 7 hours. Thus, the student is getting enough sleep.

Here are inequality signs and what they mean:

> means greater than

< means less than

≥ means greater than or equal to

≤ less than or equal to

The sign that would be used is, ≥ , the greater than or equal to sign

The total hours slept ≥ 7 hours

s ≥  7 hours

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Find the exact valu
triangle.
variable that represents a side length in a right

Find the exact valutriangle.variable that represents a side length in a right

Answers

Are there answer choices

Which table contains only corresponding x-values and y values where the value of y is 3 more than the quotient of x and 2?

Which table contains only corresponding x-values and y values where the value of y is 3 more than the

Answers

Answer:

B

Step-by-step explanation:

7/2=3.5

6.5-3.5=3

10/2=5

5+3=8

14/2+3=10

17/2+3=11.5

Need help. I can’t fail this!! 8

Need help. I cant fail this!! 8

Answers

Answer:

false

Step-by-step explanation:

first shape is square

second one is rectangle

so they are not the same

15 hot dogs cost $60. What is the rate for one hot dog

Answers

Answer:

4$ for one hotdog

Step-by-step explanation:

60/15 =

4.

One hotdog equal 4$

brainliest?

The rate of one hot dog is $4.

We are given that there are 15 hot dogs which cost $60.We have to calculate the amount of rate for one hot dog.

By the unitary method,

Amount of rate for one hot dog = is $60/15=$4

Hence one hot dog cost $4.

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18 2by5-4 1by10 find the difference

Answers

Given:

The expression is:

\(18\dfrac{2}{5}-4\dfrac{1}{10}\)

To find:

The difference.

Solution:

We have,

\(18\dfrac{2}{5}-4\dfrac{1}{10}\)

It can be rewritten as:

\(=\dfrac{90+2}{5}-\dfrac{40+1}{10}\)

\(=\dfrac{92}{5}-\dfrac{41}{10}\)

Taking LCM, we get

\(=\dfrac{184-41}{10}\)

\(=\dfrac{143}{10}\)

\(=\dfrac{140+3}{10}\)

\(=14\dfrac{3}{10}\)

Therefore, the value of the difference is \(14\dfrac{3}{10}\).

The width of a rectangle is the length minus 6 units. The area of the rectangle is 7 units. What is the length, in units, of the rectangle?.

Answers

The length of the given rectangle is 7 units.

What is the area of the rectangle?

The area of the rectangle is the product of its length and width.

I.e., A = l × w sq. units

Calculation:

It is given that, the width of a rectangle is the length minus 6 units.

I.e., W = L - 6 units

Then, the area of the rectangle is

A = L × (L - 6)

But we have given that, the area of the rectangle is 7 sq. units.

So, we can write

7 = L² - 6L

⇒ L² - 6L - 7 = 0

⇒ L² - 7L + L - 7 = 0

⇒ L(L - 7) + 1(L - 7) = 0

⇒ (L + 1)(L - 7) = 0

∴ L = -1 or L = 7

The length should not be a negative value. So, the length of the given rectangle is 7 units.

Then, the width of the rectangle is

W = L - 6 = 7 - 6 = 1 unit.

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how do you determine if a variable confounds an association?

Answers

A confounding variable must be associated with both the exposure and the outcome, and it should not be an intermediate step in the causal pathway between the exposure and outcome.

To determine if a variable confounds an association, follow these steps:

1. Identify the exposure, outcome, and potential confounding variable: Determine which variables are your exposure (independent variable), outcome (dependent variable), and the potential confounding variable.

2. Assess the relationship: Evaluate if the potential confounding variable is associated with both the exposure and the outcome. If it is, it could be a confounder.

3. Control for the confounding variable: Adjust your statistical analysis to account for the potential confounding variable, either by stratification or using multivariable regression techniques.

4. Compare the results: Analyze the strength and direction of the association between the exposure and outcome before and after controlling for the confounding variable. If the association changes significantly, it's likely that the variable is a confounder.

Remember that a confounding variable must be associated with both the exposure and the outcome, and it should not be an intermediate step in the causal pathway between the exposure and outcome.

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What is the value of the sin each of the following 5607 506 702 803 562

Answers

Answer:

sin(5607) = 0.67641680533

sin(506)  = -0.202179403335

sin(702)  = -0.989367016834

sin(803) = -0.948263002181

sin(562) =  0.33827666045

Step-by-step explanation:

put sin into a calculator and then put in the number

hope this helps! :)

Kiran scored 223 fewer points in a computer game than Tyler. Kiran scored 409 points. Which equation would Kiran use to determine how many points, t, Tyler scored?​

Kiran scored 223 fewer points in a computer game than Tyler. Kiran scored 409 points. Which equation

Answers

Answer:

\(t-223=409\)

Step-by-step explanation:

Since Kiran scored 223 fewer points in a computer game than Tyler, Tyler's score can be represented as:

\(k+223=t\), where \(t\) is Tyler's score and \(k\) is Kiran's score.

Since Kiran scored 409 points, we can set \(k=409\):

\(409+223=t\).

Re-arranging this, we get:

\(\fbox{$t-223=409$}\).

Answer:

h

Step-by-step explanation:

j

Find the required annual interest rate, to the nearest tenth of a percent, for $955 to grow to $1514 if interest is compounded monthly for 3 years.
A. 30.9%
B. 10.3%
C. 1.3%
D. 15.5%

Answers

Answer:

D

Step-by-step explanation:

\(A=P(1+\dfrac{r}{n})^{nt}\)

where A is the final amount of money, P is the initial amount of money input, r is the interest rate, n is the amount of times compounded per year, and t is the time in years.

\(1514=955(1+\dfrac{r}{12})^{(12)(3)}\)

\(1.585=(1+\dfrac{r}{12})^{36}\)

\(1.0128762=1+\dfrac{r}{12} \\\\\\0.0128762=\dfrac{r}{12} \\\\\\r\approx 0.155=15.5\%\)

Hope this helps!

the answer would be D because of the way it is set up in the problem on the screen it helped a lot of other people

The distance between two cities is 87 km. What is the distance between them on a map drawn at a scale of 1:600,000?

(answer in cm)

Answers

Answer:

  14.5 cm

Step-by-step explanation:

The distance in km is ...

  (87 km)×1/600000 = 0.000145 km

Each km is 10^5 cm, so this is ...

  (0.000145 km)(10^5 cm/km) = 14.5 cm

what is 7 1/2-3 5/6 and what is the answr to the question

Answers

Step-by-step explanation:

7 1/2 ~ 15/2

3 5/6 ~ 23/6

15 x3 45

2 x3 6

45/6 - 23/6=22/6

22/6= 3 2/3

hope it helps!

Match each shape on the left with its area formula on the right.

Match each shape on the left with its area formula on the right.

Answers

Step-by-step explanation:

A=1/2(B1+B2)h is a trapezoid

A=1/2bh is a triangle

A=bh is a parallelogram

And A=Pir2 is a circle

Answer:

A=1/2(B1+B2)h is a trapezoid

A=1/2bh is a triangle

A=bh is a parallelogram

And A=Pir2 is a circle

If It Is Right Mark Brainliest

the conch café, located in gulf shores, alabama, features casual lunches with a great view of the gulf of mexico. to accommodate the increase in business during the summer vacation season, fuzzy conch, the owner, hires a large number of servers as seasonal help. when he interviews a prospective server, he would like to provide data on the amount a server can earn in tips. he believes that the amount of the bill and the number of diners are both related to the amount of the tip. he gathered the following sample information. customeramount of tipamount of billnumber of dinerscustomeramount of tipamount of billnumber of diners 1$ 8.00$ 48.84216$ 3.30$ 23.462 23.2028.361173.5022.302

Answers

To gain a deeper understanding of the relationship between the amount of the bill, the number of diners, and the amount of tips earned by servers at The Conch Café, Fuzzy Conch should continue collecting data from additional customers.

Based on the information provided, Fuzzy Conch, the owner of The Conch Café in Gulf Shores, Alabama, wants to gather data on the amount a server can earn in tips. He believes that the amount of the tip is related to both the amount of the bill and the number of diners. Here is the sample information he gathered:

Customer 1:
- Amount of tip: $8.00
- Amount of bill: $48.84
- Number of diners: 2

Customer 2:
- Amount of tip: $3.30
- Amount of bill: $23.46
- Number of diners: 3

Based on this information, we can see that the amount of the tip can vary depending on the amount of the bill and the number of diners. Fuzzy Conch should continue collecting data from other customers to further analyze the relationship between these variables and the amount of tips earned by servers at The Conch Café.

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Solve for X. Go look at my other question

Solve for X. Go look at my other question

Answers

Answer:

A. 62 degrees

Step-by-step explanation:

The line m is straight, therefore its value is 180. So, the angle addition postulate tells us that x+118=180. To solve subtract 118 from both sides, x+118-118=180-118, which simplifies to x=62.

Consider the following.10^(1 − x )= 6^x(a) Find the exact solution of the exponential equation in terms of logarithms.x = (b) Use a calculator to find an approximation to the solution rounded to six decimal places.x =

Consider the following.10^(1 x )= 6^x(a) Find the exact solution of the exponential equation in terms

Answers

We have to find the exact solution to the equation.

We can solve it as:

\(\begin{gathered} 10^{1-x}=6^x \\ (1-x)\cdot\ln10=x\cdot\ln(6) \\ \ln10-\ln10\cdot x=\ln6\cdot x \\ \ln10=(\ln6-\ln10)x \\ x=\frac{\ln10}{\ln6-\ln10} \end{gathered}\)

b) If we use a calculator to find the logarithms we obtain the approximate value of x as:

\(\begin{gathered} \ln10\approx2.3025851 \\ \ln6\approx1.7917595 \\ \Rightarrow x\approx\frac{2.3025851}{1.7917595-2.3025851}=\frac{2.3025851}{-0.5108256}\approx-4.507576 \end{gathered}\)

Answer:

a) x = ln(10)/(ln(6)-ln(10))

b) x = -4.507576

2. For dependent events, the probability of B is always equal to the probability of B, given A. True or False?

Answers

False. For dependent events, the probability of B may not be equal to the probability of B, given A.

The probability of B given A takes into account the knowledge that A has occurred and may therefore be different from the probability of B without any knowledge of A. The formula for conditional probability is P(B|A) = P(A and B)/P(A), where P(A and B) is the probability that both A and B occur, and P(A) is the probability that A occurs. In general, the probability of B given A may be greater or smaller than the probability of B without any knowledge of A

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Use the distributive property to fill in the blanks below

Use the distributive property to fill in the blanks below

Answers

Answer:

9, 2

Step-by-step explanation:

Pull out the numbers being multiplied by 8

Answer:

9,2

Step-by-step explanation:

In a study of the accuracy of fast food? drive-through orders, Restaurant A had 239 accurate orders and 70 that were not accurate.

a. Construct a 95?% confidence interval estimate of the percentage of orders that are not accurate

Answers

The 95% confidence interval estimate of the percentage of orders that are not accurate is approximately (17.37%, 27.83%)

Let's denote p as the proportion of orders that are not accurate.

The sample proportion of orders that are not accurate is given by:

p(bar) = 70 / (239 + 70)

= 70 / 309

≈ 0.226

The standard error of the proportion is calculated as:

SE = √[(p(bar)(1 - p(bar))) / n]

= √[(0.226(1 - 0.226)) / 309]

≈ √(0.1785 / 309)

≈ 0.0267

To find the margin of error, we need to multiply the standard error by the critical value corresponding to a 95% confidence level. For a 95% confidence level, the critical value is approximately 1.96.

Margin of error = 1.96 × SE

≈ 1.96 × 0.0267

≈ 0.0523

Now we can construct the confidence interval:

Lower limit = p(bar) - Margin of error

= 0.226 - 0.0523

≈ 0.1737

Upper limit = p(bar) + Margin of error

= 0.226 + 0.0523

≈ 0.2783

Therefore, the 95% confidence interval estimate of the percentage of orders that are not accurate is approximately (17.37%, 27.83%).

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what is the value of x?

what is the value of x?

Answers

Answer:

x = 9

Step-by-step explanation:

12^2+x^2 = 15^2

==> x = 9

Answer:

9

Step-by-step explanation:

x = \(\sqrt{c^{2} - a^{2} }\)

x = \(\sqrt{15^{2} - 12^{2} }\)

x = \(\sqrt{225 - 144}\)

x = \(\sqrt{81}\)

x = 9

Systems of equations. GIving brainliest and 55 points!!

Systems of equations. GIving brainliest and 55 points!!

Answers

Answer:

4p + 2g

2p + 1g

Step-by-step explanation:

p = price of each pool pass for 1 person

g = price of gym membership for 1 person

Systems of equations. GIving brainliest and 55 points!!

Answer:

Step-by-step explanation:

Given in the question:

a) A family paid $96 for 4 pool passes and 2 gym memberships.

b)Later that day , an individual bought pool passes for herself and 2 of her friends, and 1 gym membership for her. She paid $60

Let's write the system of equation for each purchases that happened in the scenario.

Let,

    P= Price of each  pool passes

   G= Price of each gym membership

We get,

a) A family paid $96 for 4 pool passes and 2 gym memberships:

\(4P+2G=96\)

b)Later that day , an individual bought pool passes for herself and 2 of her friends, and 1 gym membership for her . She paid $60:

\(3P+1G=60\\\)

Therefore, the equation generated in the scenario were:

\(4P+2G=96\\3P+1G=60 or 3P+G=60\)

Where,

P= Price of each pool passes

G= Price of each gym membership

PLEASE MARK ME AS BRAINLIEST

What is the value of -9r-7 when r= 2?
-25
-18
11
45

Answers

Answer:

Step-by-step explanation:

-9(2) - 7 = -18 - 7 = -25

A is the answer

I will give Brainly

What is 3x^2 - 5x^3 (5 + 7)?

Answers

Answer:

-60x^3+3x^2

Step-by-step explanation:

I need a brainly please

At The Last Book Store, 4 books cost $28. How many books could you buy for $49?

Answers

7

You divide 28 by 4 and get 7. Then you divide 49 by whatever you get.

question allistair throws a biased six-sided dice. the probability of getting a 6 with this dice is 0.4. the other numbers are equally probable. if he throws the dice 3 times, what is the probability that he gets 5, 3, and 2 in this order?

Answers

The probability that he gets 5, 3, and 2 in this order is 0.92, 0.52, and 0.32 respectively.

The possibility of rolling a 6 with these dice is 0.4, according to the question. The possibility of rolling a 1 through 5 on the dice is also the probability of not obtaining a 6.

a) Chance of receiving 5:

P(6) + Q(6) = 5

Q(6) = 5 - P(6)

Q(6) = 5 - 0.4

Q(6) = 4.6

The probability of obtaining 5 to 5 is 4.6 overall.

The probability of receiving one is,

P(1) + P(2) + P(3) + P(4) + P(5) = 4.6

The first five numbers have an equally likely probability.

P(1) = 4.6 ÷ 5

P(1) = 0.92

b) Probability of getting 3:

P(6) + Q(6) = 3

Q(6) = 3 - P(6)

Q(6) = 3 - 0.4

Q(6) = 2.6

The probability of obtaining 3 to 5 is 2.6 overall.

The probability of receiving one is,

P(1) + P(2) + P(3) + P(4) + P(5) = 2.6

The first five numbers have an equally likely probability.

P(1) = 2.6 ÷ 5

P(1) = 0.52

c) Probability of getting 2:

P(6) + Q(6) = 2

Q(6) = 2 - P(6)

Q(6) = 2 - 0.4

Q(6) = 1.6

The probability of obtaining 2 to 5 is 1.6 overall.

The probability of receiving one is,

P(1) + P(2) + P(3) + P(4) + P(5) = 1.6

The first five numbers have an equally likely probability.

P(1) = 1.6 ÷ 5

P(1) = 0.32

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ILL MARK U BRAINLIEST!

ILL MARK U BRAINLIEST!

Answers

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Because when you look at the chart the orders add up to four.

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