Which equation can be used to find d, the number of dollar coins Giuliana has?

The population parameter value and the point estimate differ because a sample is not a census of the entire population, but it is being used to develop the point estimate.

From the question:

The population parameter value and the point estimate differ because a sample is not a census of the entire population , but it is being used to develop the point estimate.

Sample proportion p, is a point estimate of the population proportion.

So it is proved that correct option is point estimate.

Hence the population parameter value and the point estimate differ because a sample is not a census of the entire population, but it is being used to develop the point estimate.

Learn more about the population parameter and point estimate here:

https://brainly.com/question/6956409

#SPJ1

Rounded to three decimal places, the standardized test statistic t is 1.573. To find the standardized test statistic t, we can use the formula:

t = (x - μ) / (s / √n)

Plugging in the values given in the question, we get:

t = (30.2 - 29) / (2.2 / √12)
t = 4.268

To round to three decimal places, we look at the fourth digit after the decimal point. Since it's 8 and greater than or equal to 5, we round up the third digit to get:

t ≈ 4.268

Therefore, the standardized test statistic t is approximately 4.268.
To find the standardized test statistic t for the given sample, we will use the t-score formula:

t = (x - μ) / (s / √n)

Where:
- x is the sample mean (30.2)
- μ is the population mean under the null hypothesis (29)
- s is the sample standard deviation (2.2)
- n is the sample size (12)

Plugging in the values, we get:

t = (30.2 - 29) / (2.2 / √12) ≈ 1.573

Rounded to three decimal places, the standardized test statistic t is 1.573.

Visit here to learn more about standard deviation brainly.com/question/23907081

#SPJ11

Step-by-step explanation:

x + 149° = 180° {Being linear pair }

x = 180° - 149°

x = 31°

Hope it will help :)❤

Answer:

180-149 = 31

that's right

Answer:

10 units hope this helps!!!!!!!

Step-by-step explanation:

To find the length of side BC, we'll use right-triangle trigonometry as follows:

The value of the tangent function for the measure of angle A = (the length of the side opposite angle A)/(the length of the side adjacent to angle A)

tan 40° = BC/AC

tan 40° = BC/15 cm

Now, multiply both sides by 15 cm:

(tan 40°)(15 cm) = (BC/15 cm)(15 cm)

(tan 40°)(15 cm) = (BC)(15 cm/15 cm)

(tan 40°)(15 cm) = (BC)(1)

BC = (tan 40°)(15 cm)

Now, using a table of values for the trigonometric functions for angles from 0° to 90° or using a scientific calculator, we find that tan 40° = .8391 (to 4 decimal places). Now, substituting on the right side we get:

BC = (.8391)(15 cm)

BC = 12.6 cm to the nearest tenth of a centimeter.

Answer:

y=9

Step-by-step explanation:

A z-score of 2.14 indicates that Katie's score on the test is quite high and unusual, and places her in the top 2% of the scores in the population.

Katie scored a 93 on a test and her calculated z score was 2.14, that means that her score is 2.14 standard deviations above the mean of the test scores.

A z score represents the number of standard deviations a data point is from the mean of the data set.

A positive z score means that the data point is above the mean, while a negative z score means that the data point is below the mean.

The mean of the test scores was, 80 with a standard deviation of 5, then Katie's z score would be calculated as:

z = (x - μ) / σ

= (93 - 80) / 5

= 2.6

Z scores are useful for comparing data points from different data sets or for comparing data points within the same data set that are measured on different scales.

Katie's score is 2.6 standard deviations above the mean.

A z score of 2.14 would mean that Katie's score is slightly below this value, but still significantly above the mean.

For similar questions on z score

https://brainly.com/question/30462945

#SPJ11

The most appropriate method to test the hypothesis that, on average, students spend more time studying for SCMA301 than SCMA212 is the T-test for paired sampling.

The T-test for paired sampling is suitable for comparing the means of two related samples. In this case, the same group of 30 students is being observed and compared in two different situations: studying for SCMA212 and studying for SCMA301.

By using the paired sampling T-test, we can analyze the differences between the two sets of paired data (hours spent studying) for each student.

This method accounts for individual differences among students, such as learning styles or study habits, by comparing each student's performance in both courses. It allows us to determine whether there is a significant difference in the mean study hours between SCMA212 and SCMA301 for the same group of students. If the T-test reveals a statistically significant difference, it supports the hypothesis that, on average, students spend more time studying for SCMA301 than SCMA212.

Other methods mentioned, such as the Test on two proportions, Test on the linear regression slope, and Chi-square test for independence between two categorical variables, are not appropriate for comparing continuous numerical data, as in this case.

The T-test assuming unequal variances for two independent samples is also not ideal because we are comparing the same group of students in two different courses.

Therefore, to determine if students spend more time studying for SCMA301 than SCMA212, the most suitable approach is to use a paired t-test to compare the average study times of students in both courses.

To know more about average, refer here:

https://brainly.com/question/24057012#

#SPJ4

Complete question here:

30 students recorded the number of hours they spent studying during the semester outside of class for SCMA212. The next semester The 30 students took SCMA301and the recorded the no of hours spent studying outside of class for it. I hypothesize that on the same 30 students took SCMA301 and recorded the number the average students spend more time studying for SCMA301 than SCMA212 The most appropriate method to test the above hypothesis is?

T-test for paired sampling

Test on two proportions

Test on the linear regression slope

Chi-square test for independence between two categorical variables

T-test assuming unequal variances for two independent samples

Answer:

To determine whether Joe can legally drive after consuming 5 beers, we need to calculate a 95% prediction interval for Joe's blood alcohol concentration (BAC) and compare it to the legal BAC limit of 0.08.

The specific calculation of a prediction interval for Joe's BAC requires additional information such as the average increase in BAC per beer, the time elapsed since consuming the beers, and individual-specific factors affecting alcohol metabolism. Without these details, it is not possible to generate an accurate prediction interval.

However, it is worth noting that consuming 5 beers is likely to result in a BAC that exceeds the legal limit of 0.08 for most individuals. Alcohol affects each person differently, and factors such as body weight, metabolism, and tolerance can influence BAC. Generally, consuming a significant amount of alcohol increases the risk of impaired driving and can have serious legal and safety consequences.

without specific information regarding Joe's body weight, time elapsed, and other individual-specific factors, we cannot provide a precise prediction interval for Joe's BAC. However, consuming 5 beers is likely to result in a BAC that exceeds the legal limit, making it unsafe and illegal for Joe to drive. It is important to prioritize responsible and sober driving to ensure personal safety and comply with legal requirements.

learn more about blood alcohol concentration (BAC) here:

brainly.com/question/28245369

#SPJ11

Answer:

(4,1)?

Step-by-step explanation:

The difference in length between the longest meteor and the shortest meteor is five and five eighths inches.

To calculate the difference, we subtract the length of the shortest meteor from the length of the longest meteor.

Longest meteor - Shortest meteor = Difference in length

In this case, the longest meteor is given as five and one eighth inches, and the shortest meteor is given as one and five eighths inches.

Converting the fractions to a common denominator, we have:

Longest meteor = 5 1/8 inches = 41/8 inches

Shortest meteor = 1 5/8 inches = 13/8 inches

Now we can subtract:

Difference in length = Longest meteor - Shortest meteor

                   = 41/8 - 13/8

                   = 28/8

                   = 3 1/2 inches

                   = 3.5 inches

Therefore, the difference in length between the longest meteor and the shortest meteor is five and five eighths inches.

To learn more about difference in length click here: brainly.com/question/29503620

#SPJ11

Answer:

I need the answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

The sample is the part of the population that somebody wants to study. therefore, the sample is the 100 male students interviewed

With α = 0.05, 1.761 is the critical t value for a one-tailed test with n = 15 for a single-sample t-test.

Given that,

We have to find with α = 0.05, what is the critical t value for a one-tailed test with n = 15 for a single-sample t-test.

We know that,

α = 0.05

n = 15

One tailed t test for single sample.

We know from t-table

α = 0.05 (corresponding one -tail) and corresponding d.f = n - 1.

For sample t-test

d.f = 15 - 1 = 14

tα (0.05,14) for tail = 1.761       (from t-table)

Therefore, with α = 0.05, 1.761 is the critical t value for a one-tailed test with n = 15 for a single-sample t-test.

To know more about critical value:

https://brainly.com/question/30114401

#SPJ4

In this scenario, there are 30,000 undergraduate students and 10,000 graduate students in a university. To determine student opinions about healthcare benefits for domestic partners, a survey selects 300 undergraduate students and 100 graduate students at random.

Every student has an equal chance of being selected through this sampling technique, which uses random sampling as one of the most common probability sampling methods. Therefore, it implies that every individual in the population has an equal chance of being chosen for the sample.

However, this sampling technique is not an SRS (simple random sample) because the two groups of students (undergraduates and graduates) are not randomly chosen from the population as a whole. This is a crucial criterion for the SRS definition. Each group is chosen independently of the other group. The sampling method utilizes a stratified random sampling technique, which separates the population into subgroups or strata, and then randomly selects a simple random sample from each stratum.

In conclusion, the sampling method used in this scenario is not an SRS because the undergraduate and graduate students were not randomly selected from the entire population. Nonetheless, it is a stratified random sampling technique that allows the researchers to obtain student opinions on healthcare benefits for domestic partners.

Know more about healthcare benefits here:

https://brainly.com/question/17314353

#SPJ11

The 50th term is 290.

It is a sequence where there is a common difference between each consecutive term.

Example:

12, 14, 16, 18, 20 is an arithmetic sequence.

We have,

-4, 2, 8, 14,

This is an arithmetic sequence.

First term = a = - 4

Common difference.

d = 2 - (-4) = 6

d = 8 - 2 = 6

Now,

The nth term = a + (n -1)d

So,

n = 50

a = -4

d = 6

50th term.

= -4 + (50 - 1) 6

= - 4 + 49 x 6

= - 4 + 294

= 290

Thus,

The 50th term is 290.

Learn more about arithmetic sequence here:

https://brainly.com/question/10396151

#SPJ9

The complete question:

What is the 50th term of the sequence that begins −4, 2, 8, 14, ...?

Step-by-step explanation:

Hey there!

The equation of a st.line passing through points (4,5) and (8,9) is;

\((y - y1) = \frac{y2 - y1}{x2 - x1} (x - x1)\)

Put all values.

\((y - 5) = \frac{9 - 5}{8 - 4} (x - 4)\)

Simplify them to get equation.

\((y - 5) = \frac{4}{4} (x - 4)\)

\((y - 5) = 1(x - 4)\)

\((y - 5) = x - 4\)

\(x - y + 1 = 0\)

Therefore the required equation is: x - y + 1=0.

Hope it helps...

The  probability of either x or y occurring where  let p(x) = .55 and p(y) = .35. is 0.7.

Events that are mutually exclusive do not occur at the same time. For example, when a coin is tossed, the outcome will be either head or tail, but we cannot obtain both. Such occurrences are also known as disjunct events since they do not occur at the same time. If A and B are mutually exclusive occurrences, the probability of each is given by P(A Or B) or P(A Or B) (A U B).

P ( X ) = 0.55

P ( Y ) = 0.35

and

P ( X ∩ Y ) = 0.2

P(X ∩ Y)=0.2

P(X∪Y) = P(x) + P(Y) - P(X∩Y)

= 0.55 + 0.35 - 0.2

= 0.7

therefore, probability of either x or y occurring is 0.7

Two occurrences are said to be mutually exclusive in probability theory if they cannot occur at the same time or concurrently. In other words, discontinuous events are those that are mutually exclusive. If two occurrences are regarded discontinuous, the likelihood of both happening at the same time is zero.

Learn more about Probability;

https://brainly.com/question/8580930

#SPJ4

The distance from the center of dilation, Q, to the image of vertex A will be 4 units.

According to the given rule of dilation, D subscript Q, two-thirds, the triangle ABC will be dilated with a scale factor of two-thirds centered at point Q.

Since point Q is the center of dilation and the distance from triangle ABC to point Q is 6 units, the image of vertex A will be 2/3 times the distance from A to Q. Therefore, the distance from A' (image of A) to Q will be (2/3) x 6 = 4 units.

By applying the scale factor to the distances, we can determine that the length of A'B' is (2/3) x  3 = 2 units, the length of B'C' is (2/3) x 7 = 14/3 units, and the length of A'C' is (2/3) x 8 = 16/3 units.

Thus, the distance from the center of dilation, Q, to the image of vertex A is 4 units.

For more such answers on the Center of dilation
https://brainly.com/question/13173812

#SPJ8

Answer:

i put my money on the 2nd tho

Step-by-step explanation:

Answer:

Top Right

Step-by-step explanation:

More money was spent on fall then on the spring dance. If you look at the graph, one is higher on the amount of money spent.

Therefore, the state government should consider investing in new affordable housing initiatives.

a) To compute the 90% confidence interval, we can use the formula:

CI = p ± z*(√(p(1-p))/n)

where p is the sample proportion, z is the z-score corresponding to a 90% confidence level (which is 1.645), and n is the sample size.

Plugging in the values, we get:

CI = 0.517 ± 1.645*(√((0.517)(1-0.517))/4527)

CI = 0.505 to 0.529 (rounded to three decimal places)

b) The 90% confidence interval tells us that we are 90% confident that the true proportion of Californians who considered moving out of the state is between 0.505 and 0.529.

c) Since the confidence interval does not include the value of 0.5, which is the null hypothesis value, we can conclude that there is evidence to suggest that more than 50% of Californians would consider moving out of state due to high cost of housing.

To know more about confidence interval,

https://brainly.com/question/27375978

#SPJ11

Variability provides a quantitative measure of the differences between scores in a distribution and describes the degree to which the scores are spread out to clustered together. The purpose for measuring variability is to obtain an objective measure of how the scores are spread out in a distribution

Variability also measure how accurately individual score or sample represent the entire population

When the standard deviation is 0 , the scores have no variability.

Variability describes how far the data points are from each other and from the center of the distribution. In addition to measures of central tendency, measures of variability provide descriptive statistics that summarize the data.

learn more about variability here :
brainly.com/question/17344045

#SPJ4

Answer:

96

Step-by-step explanation:

Total area = area of cube + area of triangle

A = 8² + \(\frac{8*8}{2}\) = 64 + 32 = 96 in²

Answer:

96 square feet

to find the area of a triangle the formula is

A=1/2×b×h

8×8=64

1/2×8×8=32

32+64= 96

Answer:

d) 37 degrees, 52 minutes

Step-by-step explanation:

3x-2y+1=0       y = 3/2 x + 1/2       ... slope₁ (m₁ = 3/2)

x-3y=0           3y =1/3 x                      ... slope₂ (m₂ = 1/3)

acute angle between two slopes: tan θ = (m₁-m₂) / (1+m₁*m₂)

tan θ = (3/2 - 1/3) / (1 + 3/2*1/3) = (7/6) / (3/2) = 7/9 = 0.77777777

θ = 37.875°

Answer:

yeah im pretty sure you are

Step-by-step explanation:

Answer:

the last one is the correct answer

Step-by-step explanation:

In order for it to be proportional it has to go through the origin (0,0)

Proportional - y=mx

Non Proportional - y=mx+b

Answer:

no

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Sea level is always represented by the number 0 unless you are reffering to how to get to see level in which case you'd have to fly down -1200 ft.

Answer:

1/2

Step-by-step explanation:

p(event) = (number of desired outcomes)/(total number of outcomes)

How many different outcomes are there? You can choose 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, so the total number of possible outcomes is 10.

How many outcomes are desired. The desired outcomes are any outcomes with a number 6 or higher. Which numbers are 6 or higher? 6, 7, 8, 9, 10. There are 5 outcomes that are 6 or higher, so there are 5 desired outcomes.

p(event) = (number of desired outcomes)/(total number of outcomes)

p(event) = 5/10 = 1/2

Answer: 1/2