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Author Question: Solve the problem.Among a random sample of 400 college students, the mean number of hours worked per ... (Read 255 times)

cagreen833

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Question 1

Solve the problem.

Among a random  sample of 250  college students, the mean number of hours worked per week at non-college related jobs is 14.2. This mean lies 2 standard deviation(s) above the mean of the sampling distribution. If a second sample of 250 students is selected, what is the probability that for the second sample, the mean number of hours worked will be greater than 14.2?
◦ 0.0222
◦ 0.9772
◦ 0.5
◦ 0.0228

Question 2

Solve the problem.

Among a random  sample of 400  college students, the mean number of hours worked per week at non-college related jobs is 14.4. This mean lies 2.8 standard deviation(s) above the mean of the sampling distribution. If a second sample of 400 students is selected, what is the probability that for the second sample, the mean number of hours worked will be less than 14.4?
◦ 0.0026
◦ 0.9965
◦ 0.5
◦ 0.9974


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Marked as best answer by cagreen833 on Jan 18, 2020

taylorsonier

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cagreen833

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Reply 2 on: Jan 18, 2020
YES! Correct, THANKS for helping me on my review


epscape

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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