MGMT 650 Week 6 Practice Quiz Answers (Spring 2018) (UMUC)

Question 1

1 / 1 point

The program director estimated that the proportion of MGMT650 students that are very satisfied is 88% 5%.

Question 2

1 / 1 point

A sample of size 45is selectedfrom a normally distributed population. The sample standard deviation is 7.050. What is the standard error of the distribution of sample means? Enter your answer with 3 decimal places.

Question 3

0 / 1 point

To compute a confidence interval for the mean, population standard deviation unknown, n = 35, and = 0.01, enter the critical value with 3 decimal places.

Question 4

1 / 1 point

To compute a confidence intervalfor the mean, population standard deviation unknown, n = 25, and = 0.10, enter the critical value with 3 decimal places.

Question 5

1 / 1 point

As the sample sizeincreases, themargin of error

Question 6

1 / 1 point

As the sample size decreases, confidence interval width

Question 7

0 / 1 point

A sample of 10 widgets has a mean of 34.000 and standard deviation of 9.250. At 90% confidence, the lower limit with 3 decimal places is

Question 8

0 / 1 point

A sample of 18 widgets has a mean of 49.200 and standard deviation of 8.350. At 99% confidence, the upper limit with 3 decimal places is

Question 9

0 / 1 point

A statistics course has 20 students in which 74% passed. At 95% confidence, the upper confidence limit for the proportion students passing with 3 decimal places is

Question 10

0 / 1 point

A statistics course has 22 students in which 82.0% passed. At 90% confidence, the lower confidence limit for the proportion students passing with 3 decimal places is

Question 11

4 / 9 points

Match the problem on the leftto the statistical procedure on the right.