Question 13

On a mathematics test, scores are normally distributed with a mean of 77 and a standard deviation of 16.8. A student is randomly selected.

c) Find the probability that his/her score is smaller than 60.

Question 13 options:

0.5714

0.4286

0.1562

0.4152

Question 14

On a mathematics test, scores are normally distributed with a mean of 77 and a standard deviation of 16.8. A student is randomly selected.

d) Find the probability that his/her score is between 60 and 80.

Question 14 options:

0.4152

0.5714

0.4286

0.1562

Question 15

The following confidence interval is obtained from a population proportionp:

0.883

What is the margin errorE.

Question 15 options:

0.897

0.014

0.028

0.015

Question 16

Of 375 randomly selected students, 30 said that they planned to work in a rural community.

a) Find 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.

Question 16 options:

0.0439< p<0.116

0.0570< p<0.103

0.0525< p<0.107

0.0474< p<0.113