A spinner with four sections is spun 30 times. (R=7 Y=8 B=6 G=9) Based on these results, what is the experimental probability that the next time the spinner is spun, it lands on yellow?


Answer is - 4/15

Answer:

theres no clock

Step-by-step explanation:

The vector a that has the same direction as ⟨−6, 5, 6⟩ but a length of 5 is approximately ⟨−3.03, 2.53, 3.03⟩.

To get a vector with the same direction as ⟨−6, 5, 6⟩ but with a length of 5, we need to scale the given vector to have a length of 5 while preserving its direction.

First, we calculate the magnitude (or length) of the vector:

|⟨−6, 5, 6⟩| = √((-6)^2 + 5^2 + 6^2)

= √(36 + 25 + 36)

= √(97)

≈ 9.85

To obtain a vector with a length of 5, we can divide each component of the vector ⟨−6, 5, 6⟩ by the magnitude and then multiply by the desired length:

a = 5 * ⟨−6/9.85, 5/9.85, 6/9.85⟩

Simplifying the components:a ≈ ⟨−3.03, 2.53, 3.03⟩

Therefore, the vector a that has the same direction as ⟨−6, 5, 6⟩ but a length of 5 is approximately ⟨−3.03, 2.53, 3.03⟩.

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Answer:

Step-by-step explanation:

A triangular pyramid has 6 edges, 4 vertices, and 1 base

In a Time magazine poll, of 10,000 Americans surveyed, 4% indicated that they were vegetarian. Based on the construction of a 99% confidence interval, it can be concluded that less than 10% of Americans are vegetarian. The correct alternative about the conclusion is a. The conclusion is valid.What is a confidence interval.

A confidence interval is a range of values that estimates a population parameter with a certain degree of certainty. A confidence interval is constructed around the point estimate. It represents the probability that a population parameter will be between two numbers (upper and lower bounds) in repeated samples. The interval width is determined by the degree of uncertainty in the sample estimate and the degree of confidence required.What is the correct interpretation of a 99% confidence interval.

A confidence interval of 99% is a range of values that, when repeated samples are taken from the same population, will enclose the true population parameter 99 percent of the time. A confidence interval of 99 percent implies that there is a 99 percent chance that the interval includes the true population parameter, with a 1 percent chance of failing to include the true population parameter in repeated samples.

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Answer:

7x-3y=50

3x+11y=-2

Step-by-step explanation:

No equations share common solution with this system of equations:

5x+4y=25

2x-7y=26

We have equations

5x+4y=25...(1)

2x-7y=26...(2)

We will solve the equation by elimination method.

Multiply the equation (1) by 2 and equation (2) by 5 and subtracting, we get

10x+8y-(10x-35y)=50-130

43y=-80

\(y=\frac{-80}{43}\)

Put \(y=\frac{-80}{43}\) in equation (1), we get

\(5x+4(\frac{-80}{43} )=25\\x=\frac{279}{43}\)

Now, let us check whether the solution satisfies the other equations

A. 7x+3y=50

\(7(\frac{279}{43}) +3(\frac{-80}{43} )\\=\frac{1953-240}{43} \\=39.83\\\neq 50\)

B. 7x-3y=50

\(7(\frac{279}{43}) -3(\frac{-80}{43} )\\=\frac{1953+240}{43} \\=\frac{2193}{43} \\=51\\\neq 50\)

C. 5x+4y=2x-7

\(5(\frac{279}{43} )+4(\frac{-80}{43} )=2(\frac{279}{43} )-7(\frac{-80}{43} )\\\frac{1395-320}{43} =\frac{558+560}{43} \\\frac{1363}{43} \neq \frac{1118}{43} \\\)

D. 3x-11y=-2

\(3(\frac{279}{43}) -11(\frac{-80}{43} )\\=\frac{837+880}{43} \\=\frac{1717}{43} \\=39.9\\ \neq -2\)

E. 3x+11y=-2

\(3(\frac{279}{43}) +11(\frac{-80}{43} )\\=\frac{837-880}{43} \\=\frac{-43}{43} \\=-1\\ \neq -2\)

Hence, no equations satisfies the solution with this system of equations:

5x+4y=25

2x-7y=26

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a.  A statistical test used to help answer the question of whether an observed difference is real or just due to chance error- true

The statistical test referred to in the question is known as a hypothesis test. It is used to determine the probability that the observed difference between two groups or variables is not due to chance but rather represents a true difference. The test involves setting up a null hypothesis, which assumes that there is no difference between the groups or variables, and an alternative hypothesis, which assumes that there is a real difference.

The test calculates a p-value, which represents the probability of obtaining the observed difference by chance if the null hypothesis is true.

If the p-value is below a predetermined level of significance (usually 0.05), then the null hypothesis is rejected and the alternative hypothesis is accepted.

This means that the observed difference is considered real and not just due to chance error.

Hence, If the p-value is below a certain level of significance, the null hypothesis is rejected and the alternative hypothesis is accepted, indicating that the observed difference is real.

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Answer:

all real number

Step-by-step explanation:

domain are the value of x axis. as you can see the the graph goes for ever. there is no limitation. basically the domain of exponential graph are all really number.

the probability of getting exactly 5 successes in 7 trials, with a success probability of 0.8 in each trial, is 0.3226.

The binomial distribution is a probability distribution that describes the number of successes in a fixed number of independent trials. In this case, n=7 represents the number of trials, and p=0.8 represents the probability of success in each trial.

To find p(x=5), we use the binomial probability formula: P(x=k) = (n choose k) × \(p^{k}\) × \((1-p)^{(n-k)}\), where (n choose k) is the binomial coefficient, which represents the number of ways to choose k successes out of n trials.

Plugging in the values, we have: P(x=5) = (7 choose 5) × \((0.8)^{5}\) × \((1-0.8)^{(7-5)}\) = 0.3226

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Answer:

x=3

Step-by-step explanation:

7+4(5/4x-1)=18

7+5x-4=18

3+5x=18

5x=15

x=3

Answer:

x = 3

Step-by-step explanation:

18 = 7 + 4(\(\frac{5}{4}\)x - 1)

18 = 7 + 5x - 4

18 = 3 + 5x

15 = 5x

x = 3

Answer:

f²r-nr=d

Step-by-step explanation:

f²r-N=d/r

multiply both sides by r to get d by itself

f²r-nr=d

(all variables need to be there in your final equation)

Answer: 0.421, 0.422, 0.423, 0.43, 0.434

Step-by-step explanation:

Answer:

Step-by-step explanation:

36

Answer:

6. x=20;

7. x=38, y=104;

8. x=30

Step-by-step explanation:

The forecast for May using a five-month moving average is 39 (Option E).

Moving average is used for smoothing out time series data to find any trends or cycles within the data. A five-month moving average is the average of the past five months. To calculate the moving average, add up the sales for the previous five months and divide it by five.

According to the question, the sales for the previous five months are: Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47

We have to add the sales of these five months, which gives:

27 + 40 + 42 + 41 + 47 = 197

To find the moving average for May, we divide this sum by 5:

197 / 5 = 39.4

Since we have to round the answer to the nearest whole number, we round 39.4 to 39, which is option E.

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The solution set of Five times the sum of a number and 27 is greater than or equal to six times the sum of that number and 26 is x ≤ 21

Inequalities are expressions that have <, >, ≤ or ≥. Therefore,

let the number = x

Five times the sum of a number and 27 is as follows:

5(x + 27)

Six times the sum of that number and 26 is as follows:

6(x + 26)

Five times the sum of a number and 27 is greater than or equal to six times the sum of that number and 26 is as follows:

5(x + 27) ≥ 6(x + 26)

Therefore,

5(x + 27) ≥ 6(x + 26)

5x + 135 ≥ 6x + 156

-x ≥ 21

x ≤ 21

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Answer:

ITS B

Step-by-step explanation:

took the test

The probability that a srs of 20 students will spend an average of between 600 and 700 dollars is 0.92081.

We need to find the probability that a simple random sample of 20 students will spend an average of between 600 and 700 dollars.

To solve this problem, we will use the central limit theorem, which states that the sampling distribution of the sample means will be approximately normally distributed with a mean of μ and a standard deviation of σ/√(n), where n is the sample size.

Thus, the mean of the sampling distribution is μ = 650 and the standard deviation is σ/sqrt(n) = 120/√(20) = 26.83.

We need to find the probability that the sample mean falls between 600 and 700 dollars. Let x be the sample mean. Then:

Z1 = (600 - μ) / (σ / √(n)) = (600 - 650) / (120 / √t(20)) = -1.77

Z2 = (700 - μ) / (σ / √(n)) = (700 - 650) / (120 / √(20)) = 1.77

Using a standard normal distribution table or calculator, we can find the area under the standard normal distribution curve between these two Z-scores as:

P(-1.77 < Z < 1.77) = 0.9208

Therefore, the probability that a simple random sample of 20 students will spend an average of between 600 and 700 dollars is 0.9208, or approximately 0.92081 when rounded to five decimal places.

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Given in the question:

a.)

Answer:

9.57 moles

Step-by-step explanation:

There is 1.1  mole per liter....

1.1 M/ l * 8.7 L = 9.57 moles

If the sample is not truly representative, the conclusion may not accurately reflect the actual average age of all the students at the college.

Based on the given information, it can be concluded that the average age of all the students at City College is likely around 20. However, it's important to note that this conclusion is only valid if the sample of 90 students is representative of the entire student population at City College. If the sample is not truly representative, the conclusion may not accurately reflect the actual average age of all the students at the college.

The average age in a sample of 90 students at City College is 20. However, based on this sample alone, it cannot be conclusively determined that the average age of all the students at City College is also 20. This is because the sample may not be fully representative of the entire student population. More information or a larger sample would be needed to make a more accurate conclusion about the average age of all students at City College.

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If the sample of 90 students is representative of the entire student population at City College, then we can conclude that the average age of all students is approximately 20 years old.

Based on the given information, the average age in a sample of 90 students at City College is 20.

To determine if this sample can be used to conclude the average age of all students at City College, we need to consider these terms:
Sample:

A subset of a population, which in this case is the group of 90 students at City College.
Population:

The entire group of students at City College that we want to make a conclusion about.
Average (Mean) Age:

The sum of ages divided by the total number of students, in this case, 20 years.
Representativeness:

How well the sample reflects the characteristics of the entire population.
If the sample of 90 students is representative of the entire student population at City College, then we can conclude that the average age of all students is approximately 20 years old.

However, if the sample is not representative, the conclusion may not be accurate.

To make a more accurate conclusion, it is important to ensure that the sample is representative by using a larger sample size or random sampling methods.

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Answer: to make AB perpendicular to CD move point B until the angle between the lines, BEC measures 90 degree

Step-by-step explanation:

Your total vacation budget would be $280, considering the $160 spent on groceries and the estimated cost of eating out 3 times at $40 per meal from linear equation concept.

For your vacation at the beach, you have already spent $160 on groceries for the week. In addition, you anticipate spending $40 each time you eat out.

To determine your overall budget for the vacation, you need to consider how many times you plan to eat out during the week. Let's say you plan to eat out 'x' number of times.

Since each time you eat out costs $40, the total amount spent on eating out can be represented by the equation:

Total spent on eating out = $40 * x

Adding this to the amount spent on groceries, the total vacation budget can be calculated as:

Total budget = Amount spent on groceries + Total spent on eating out

Total budget = $160 + ($40 * x)

For example, if you plan to eat out 3 times during the week, the calculation would be:

Total budget = $160 + ($40 * 3)

Total budget = $160 + $120

Total budget = $280

In this case, your total vacation budget would be $280, considering the $160 spent on groceries and the estimated cost of eating out 3 times at $40 per meal.

The total budget will vary depending on the number of times you plan to eat out. By adjusting the value of 'x', you can calculate the specific total budget for your vacation.

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A simple linear regression model only includes one independent variable, while a multiple linear regression model includes two or more independent variables. The purpose of both models is to examine the relationship between the dependent variable and the independent variable(s) and to make predictions based on that relationship.

If the same dependent variable and independent variable(s) were used in both the simple and multiple linear regression tests, then it is possible that the results could be different. The multiple linear regression model may provide a more accurate prediction of the dependent variable since it takes into account multiple independent variables. Overall, without more information about the data and the specific models used, it is difficult to determine whether the results of the simple and multiple linear regression tests were different or not.

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Answer:

1254

Step-by-step explanation:

Circumference = π X D (D = diameter = 2 X radius)

= (3.14) X (12)

= 37.68 inches.

1 metre = 39.3701

1200 metres =  47244.12 inches.

47244.12 ÷ 37.68

= 1253.8248

= 1254 revolutions to nearest whole number

Answer:

5

Step-by-step explanation:

because its squared 5 but 5 regular is almost 4 if u look at bottom theres 4 so x is 5

Answer:

6 possibly

Step-by-step explanation:

you said to divide so

30/5=6

Answer:

MEAN = 14 (AS PER ESTIMATION)

MEDIAN = 17

Step-by-step explanation:

Mean=Sum of terms/No.of terms

Then,

→13+16+14+17+17+8+16/ = 101/7 = 14.428571....…

Median = The middle number

= 17

The phase of inferential statistics which is sometimes considered to be the most crucial because errors in this phase are the most difficult to correct is "data gathering".

Inferential statistics are frequently employed to compare treatment group differences.

Some characteristics of inferential statistics are-

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Answer:

10x-2+2x+18

=10x+2x+18-2

=12x+16

Answer:8x-16

Step-by-step explanation:

B

iuhuhuhuhuuuhuuuuuuuuuuuuuuhuhuh

The diagonal matrix that has these values would be:

16 0 0 0 0

0 -8.7 0 0 0

0 0 5.4 0 0

0 0 0 1.3 0

0 0 0 0 -6.9

This is the type of matrix that is written in the form where all of the entries that are outside the diagonal are zeros.

The diagonal is a line that divides a triangle into two halves. The diagonal here has all of the digits. Outside it are all zero elements.

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Answer:

C is the correct answer

Explanation:

Hope you have a great day!