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Today due to COVID-19 virus pandemic in the USA, full-time college students report spending a mean of 20 hours per week on academic activities from home. Assume the standard deviation of time spent on academic activities is 3 hours. If you select a random sample of 50 full-time college students. What is the probability that sample mean time spent on academic activities is at least 19 hours a week? Be sure to round your test statistics to two decimal places before you look up on the z table. a, 0.0091 b. 0.9909 c. 0.05 d. 0.01

Today due to COVID-19 virus pandemic in the USA, full-time college students report spending a mean of 20 hours per week on academic activities from home. Assume the standard deviation of time spent on academic activities is 3 hours. If you select a random sample of 50 full-time college students. What is the probability that sample mean time spent on academic activities is at least 19 hours a week? Be sure to round your test statistics to two decimal places before you look up on the z table. a, 0.0091 b. 0.9909 c. 0.05 d. 0.01

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Today due to COVID-19 virus pandemic in the USA, full-time college students report spending a mean of 20 hours per week on academic activities from home. Assume the standard deviation of time spent on academic activities is 3 hours. If you select a random sample of 50 full-time college students. What is the probability that sample mean time spent on academic activities is at least 19 hours a week? Be sure to round your test statistics to two decimal places before you look up on the z table. a. 0.0091 b. 0.9909 O c. 0.05 O d. 0.01
Transcribed Image Text:Today due to COVID-19 virus pandemic in the USA, full-time college students report spending a mean of 20 hours per week on academic activities from home. Assume the standard deviation of time spent on academic activities is 3 hours. If you select a random sample of 50 full-time college students. What is the probability that sample mean time spent on academic activities is at least 19 hours a week? Be sure to round your test statistics to two decimal places before you look up on the z table. a. 0.0091 b. 0.9909 O c. 0.05 O d. 0.01
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