Author Question: The mean of a set of data is 380.65 and its standard deviation is 82.45. Find the z-score for a ... (Read 124 times)

olgavictoria · **on:** Jul 25, 2018

The mean of a set of data is 380.65 and its standard deviation is 82.45. Find the z-score for a value of 405.71. Round your final answer to two decimal places.

A) 0.60 B) 0.27 C) 0.30 D) 0.33

Question 2

A magazine publisher always mails out a questionnaire six months before a subscription ends. This questionnaire asks its subscribers if they are going to renew their subscriptions.

On average, only 8 of the subscribers respond to the questionnaire. Of the 8 who do respond, an average of 41 say that they will renew their subscription. This 8 who respond to the questionnaire are known as what?
A) The population B) The sample