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Author Question: It is desired to estimate the proportion of college students who feel a sudden relief now that their ... (Read 206 times)

PhilipSeeMore

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Question 1

It is desired to estimate the average time it takes Statistics students to finish a computer project to within two hours at 90% reliability. It is estimated that the standard deviation of the times is 14 hours.  How large a sample should be taken to get the desired interval?
◦ n = 133
◦ n = 325
◦ n = 189
◦ n = 231

Question 2

It is desired to estimate the proportion of college students who feel a sudden relief now that their statistics class is over. How many students must be sampled in order to estimate the true proportion to within 2% at the 90% confidence level?
◦ n = 133
◦ n = 2401
◦ Cannot determine because no estimate of p or q exists in this problem
◦ n = 189
◦ n = 1692


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Marked as best answer by PhilipSeeMore on Feb 14, 2020

jlaineee

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PhilipSeeMore

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Reply 2 on: Feb 14, 2020
Wow, this really help


Viet Thy

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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