A simple random sample of 240 people was asked if they have insurance coverage, and 90 replied that theydid not have coverage. Based on these sample data,a. what is the best point estimate for the population proportion of people without insurance coverage?[Select]b. at 95% level of confidence, compute the margin of error.[Select]c. determine the 95% confidence interval estimate for the population proportion of people withoutinsurance coverage.[Select]d. which of the following is the best interpretation of the result? [Select][Select]The probability that interval estimate contains the population proportion of people without insurance coverage is 95%The probability that interval estimate contains the population proportion of people without insurance coverage is 5%We are 95% confident that the proportion of people without insurance coverage is between the interval.We are certain that the confidence interval contains the population proportion of people without insurance coverage.LL

Given: Random sample size (n ) = 240 x = 90 replied Confidence level = 95 %

Answered: A simple random sample of 240 people…

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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In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.04 margin of error and use a confidence level of 95%. Complete parts (a) through (c) below. a. Assume that nothing is known about the percentage to be estimated. n= (Round up to the nearest integer.) b. Assume prior studies have shown that about 55% of full-time students earn bachelor's degrees in four years or less. n= (Round up to the nearest integer.) c. Does the added knowledge in part (b) have much of an effect on the sample size? O A. No, using the additional survey information from part (b) does not change the sample size. O B. Yes, using the additional survey information from part (b) dramatically reduces the sample size. Oc. Yes, using the additional survey information from part (b) only slightly increases the sample size. O…
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In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.02 margin of error and use a confidence level of 95%. Complete parts (a) through (c) below. a. Assume that nothing is known about the percentage to be estimated. (Round up to the nearest integer.) b. Assume prior studies have shown that about 40% of full-time students earn bachelor's degrees in four years or less. (Round up to the nearest integer.) c. Does the added knowledge in part (b) have much of an effect on the sample size? O A. Yes, using the additional survey information from part (b) dramatically reduces the sample size. O B. No, using the additional survey information from part (b) only slightly reduces the sample size. O C. Yes, using the additional survey information from part (b) only slightly increases the sample size. O…
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The owner of the west end Kwick fill gas station wishes to determine the proportion of customers who pay at the pump using credit card or debit card. He surveys 100 customers and finds that 85 pay at the pump. (Round your answers to 3 decimal places.) a. Estimate the value of the population proportion: b. Develop a 95% confidence interval for the population proportion.
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