Author Question: A magazine poll of unemployed men in the U.S. stated 22 of those polled suffer from clinical ... (Read 102 times)

Davideckstein7 · **on:** Jul 25, 2018

A magazine poll of unemployed men in the U.S. stated 22 of those polled suffer from clinical depression; the margin of error for the poll is plus or minus 6 percentage points.

How would you interpret this statement? Assume that the margin of error is associated with a 95 confidence interval.
A) We can be 95 confident that the percentage of all unemployed men in the U.S. who suffer from clinical depression is somewhere between 16 and 28.
B) A confidence interval for the percentage of all unemployed men in the U.S. who suffer from clinical depression is 17 to 27. There is a 6 chance that this interval does not include the population proportion

Question 2

The top speeds (in mph) for a sample of five new automobile brands are listed below. Calculate the standard deviation of the speeds.
155, 135, 200, 175, 100

A) 100 mph B) 153.00 mph C) 38.2 mph D) 29,223.00 mph