You work for NASA and are interested in determining the population proportion, with 99% confidence, of all Americans who have heard of the Breakthrough Starshot program, and you would like to determine this population proportion value to with a margin of error of .05. What is the minimum sample size required for this task?

Q: The margin of error increases if the sample size increases. True False

A: Margin of error is given by, MoE= z*sigma/√n  MoE is inversely proportional to n so as we increase…

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: 1. A dermatologist wishes to estimate the proportion of young adults who apply sunscreen regularly…

A: From the provided information, Margin of error = 0.03 Confidence level = 90%

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: The Chancellor wants you to calculate a second sample size after sample 1 produced a 40% response…

A: From the provided information, Confidence level = 80% Margin of error (E) = 7% that is 0.07 Sample…

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: what is the 95th percentile in the t-distribution if the sample size is 25?

A: Given Information: n=25Type of distribution=t distributionTo calculate=95th percentile

Q: When sample size increases the cost of survey increases Select one: O True O False ouS ACTIVITY

A: Correct Answer True

Q: Suppose that you want to compare the means of several populations, using independent samples. If…

A:

Q: How large must the sample size be in order to to estimate a true proportion to within one percentage…

A: Given that, Critical value: Using the z-table, the critical value at 90% confidence level…

Q: Explain why you should get a much better prediction for μ by using x from a sample size n rather…

A: The confidence interval on mean is given as x-Zα2sdn≤μ≤x-Zα2sdn where  μ=population meanx=sample…

Q: Among the random and non-random sampling techniques that we have, which do you think is the most…

A: Random/Probability sampling is a technique in which each member of the population has an equal and…

Q: Consider a simple poll that is measuring the proportion of citizens that hold a particular political…

A:

Q: What sample size should you gather to achieve a 0.7 hour margin of error?

A: here given , population standard deviation  = 4.2 hour  confidence level = 99% MOE  = 0.7

Q: In order to estimate the population proportion with a high school education,  you need a minimum…

A:

Q: Historically, the proportion of car parks in a particular city that offer early discount fees is…

A: a. Consider that p is population proportion of car parks in a particular city that offer early…

Q: #5 What sample size is needed to give a margin of error of  ±4%  in estimating a population…

A:

Q: Suppose that you are attempting to estimate the weight of 600 parts. In order to use the infinite…

A:

Q: Since the sample size is always smaller than the size of the population, the sample mean O A. can be…

A: Correct answer is (A)

Q: The mean of the sampling distribution of the sample mean is smaller than the mean of the…

A: According to Central limit theorem, when repeated sample of size n is drawn from a population with…

Q: What are some limitations of the experience sampling methond? How do the data this method provides…

A: The limitations of experience sampling method and how its data compares with that of self-report…

Q: As the sample size increases, does the mean of the sampling distribution of sample mean increase?

A: According to law of large numbers, as sample size increases, the mean of sampling distribution is…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96, p=0.54 and E=0.02.

Q: If we would like to decrease the margin of error without changing the sample size, what must happen?

A: We have to find what to do to decrease margin of error.

Q: a researcher peformed the Mann-Whitney test and found a significant difference between psychologists…

A: Since, the population standard deviation known. Therefore, the value of z should be taken from…

Q: intended population

A: A population is the entire group that you want to draw conclusions about   Intended population:…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: a) Compute the required sample size using the formula: E=zα2 p⏞11-p⏞1n+p⏞21-p⏞2n   Where 'E' is the…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The proportion is p0=0.52 The total number of samples n=700 The value of…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: The single proportion  binomial test is used to compare a proportion of responses or values in a…

Q: Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high…

A: Using the given data fill the blanks

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Given Data: Margin of Error=0.22 p=0.54   z-value=1.96

Q: What is the target sample size for a population of 3,500 people with a standard value of 1.65 and a…

A: Solution-; Given: N=3500, Standard value (V)=1.65,sampleing error (Se)=0.10 We find the target…

Q: What will happen to the sample size if the percentage error becomes lower? Can you explain to me how…

A: From the given information we want to find solution.

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: When a sampling technique introduces a considerable amount of bias, increasing the sample size will…

A: Given:- In a sampling technique, a considerable amount of bias is introduced.  Increasing the sample…

Q: What are the practical Reasons for learning how to use the formula in determining sample size?

A: The two major factors affecting the power of a study are the sample size and the effect size A…

Q: • When might a small sample size be appropriate in a study? •When is a very large sample size…

A: When the sample size is ideal then a sample size can be appropriate in a study. The ideal sample…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A:

Q: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: You can reduce the risk of a Type I error by using a larger sample. True or False?

A: Type-I error: Type I error is rejecting the null hypothesis when the null hypothesis is actually…

Q: The mean of a sampling distribution is smaller than the mean of the underlying population. True or…

A: We have to find that the given statement is true or false... The mean of a sampling distribution is…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: Denote p as the true proportion of parents, who think that high school students were not being…

Q: What is the relationship between the sampling variance of an OLS parameter estimate, and the total…

A: Sampling variance is the variance of the sampling distribution for a random variable. It measures…

Q: How large must the sample size be in order to to estimate a true proportion to within one percentage…

A:

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: using the given data fill all the blanks required

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.