Determine the necessary sample size.9.What is the approximate sample size required to estimate the percentage of Americans who haveearned a college degree to within 2%, with 95% confidence?Recall: the worst-case scenario would assume that p = 0.5a) 2401b)3382c) 4145d) 1692e) 7156Select the most appropriate response.10.What will happen (other things being equal) if vou decrease the confidence level for a given confidenceAwwwwdnfi

The Z score at a 95% confidence interval from the standard normal table is 1.960. The provided…

Answered: Determine the necessary sample size. 9.…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Similar questions

Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 286 with 240 successes at a confidence level of 99.8%
The relationship between sample size and the width of a confidence interval may be explained by the concept of ______ . Select one: a. z score b. point estimates c. sampling error d. descriptive statistics
The Student Health Center at NCSU would like to conduct a survey to estimate the proportion of NCSU students who have smoked marijuana in the past month. The Student Health Center would like to estimate the population proportion p to within .04 with 95% confidence. 1. What sample size is required if the Health Center has no knowledge of the approximate value of p? 2. The Health Center discovers the results of a previous survey that estimates p to be about .35. Use this additional information to calculate the sample size required to estimate the population proportion p to within .04 with 95% confidence.
Determine the sample size needed to be 99% confident the population proportion estimate is within 3% of the true proportion. There is no prior information regarding values for p and q.
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 123 with 27.6% successes at a confidence level of 99%
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 234 with 29.1% successes at a confidence level of 95%.
What happens to the minimum sample size needed to estimate p when the acceptable margin of error increases? O A. the minimum sample size does not change B. the minimum sample size decreases C. the minimum sample size increases
What does brand loyalty mean to consumers? According to a recent research report, 38% of consumers associate trust with brand loyalty. Complete parts (a) through (e) below. a. To conduct a follow-up study that would provide 95% confidence that the point estimate is correct to within ±0.04 of the population proportion, how large a sample size is required? A sample size of ___ consumers is required.
3. Compute the population proportion interval estimate given n, p. and the confidence level. a. p = 0.40,95% confidence ,n=200 b. p = 0.23, 90% confidence,n=420 %3D C.p = 0.52, 99% confidence ,n =220
7. use the given confidence interval to find the margin of error and the sample proportion. a. (0.719,0.745) b. (0.753,0.777)
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 278 with 33 successes at a confidence level of 99.5%. M.E. =

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