Question

1. Find the standard deviation of the following numbers. Round to the nearest hundredth.

4, 8, 9, 11, 12

2. What is the standard deviation in the percent of heads when you flip 200 fair coins several times?

3.The confidence interval for a poll is 52% to 60%. What is the margin of error?

4.

For the following measurements, find the mode:

37, 42, 48, 51, 51, 52, 53, 54, 54, 55

5.

A clinical trial for an experimental treatment for acne has a p-value of 0.04. Mark the following statement below true, or false.

The chance that as many or more patients would have improved without treatment is under 4%. true or false?

Answer 1