Author Question: Your teacher announces that the scores on a test have a mean of 83 points with a standard deviation ... (Read 106 times)

jeatrice · **on:** Jun 24, 2018

Your teacher announces that the scores on a test have a mean of 83 points with a standard deviation of 4 points, so it is reasonable to expect that you scored at least 70 on the test.

A) True B) False

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Question 2

According to a recent study, 1 in every 7 women has been a victim of domestic abuse at some point in her life. Suppose we have randomly and independently sampled twenty-five women and asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic abuse.

A) 0.067132 B) 0.774262 C) 0.176664 D) 0.286196