11/2/2017CourseWare…1/6You scored 100 out of 100Question 1Your answer is CORRECT.The z-score associated with the 98 percent confidence interval is a) 2.326b) 1.985c) 2.829d) 2.254e) 2.054f) None of the above

Question 2Your answer is CORRECT.What will increase the width of a confidence interval?

Question 3Your answer is CORRECT.A simple random sample of 100 8th graders at a large suburban middle school indicated that 86% of them are involvedwith some type of after school activity. Find the margin of error associated with a 98% confidence interval thatestimates the proportion of them that are involved in an after school activity.

11/2/2017CourseWare…2/6Question 4Your answer is CORRECT.A simple random sample of 64 8th graders at a large suburban middle school indicated that 88% of them are involvedwith some type of after school activity. Find the 98% confidence interval that estimates the proportion of them that areinvolved in an after school activity.

Question 5Your answer is CORRECT.Mars Inc. claims that they produce M&Ms with the following distributions:Brown 30% Red 20% Yellow Orange 10% Green 10% Blue A bag of M&Ms was randomly selected from the grocery store shelf, and the color counts were:Brown 22 Red 21 Yellow Orange 13 Green 17 Blue 20% 10% 22