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

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