A random sample of size n = 40 yielded p = 0.50.a. Is the sample size large enough to use the large sample approximation to construct a confidence interval for p? Explain.b. Construct a 90% confidence interval for p.c. Interpret the 90% confidence interval.d. Explain what is meant by the phrase "90% confidence interval."a. Is the sample large enough?A. Yes, because np ≥ 15 and nq≥ 15.B.No, because np < 15 and nq < 15.OC. No, because np < 15 and nq < 15.OD. No, because np ≥ 15 and nq < 15.b. The 90% confidence interval for p is (.).(Round to two decimal places as needed.)B

Answered: a. Is the sample size large enough to…

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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A researcher surveyed college students in the United States on the typical amount of time each day that they spend interacting with different types of media (television, social media, Internet-connected devices, game consoles, etc.) The researcher found that the mean amount of time that college students spent watching television each day is 135 minutes with a 95% confidence interval of (105, 165). a. State the conclusion the researcher can make from this confidence interval. b. What is the margin of error for the confidence interval?
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a. Is the sample size large enough to use the large sample approximation to construct a confidence interval for p? Explain. b. Construct a 90% confidence interval for p. c. Interpret the 90% confidence interval.