Researchers were interested in the number of monitors and screens (televisions and computer monitors) owned within households in Canada

Researchers were interested in the number of monitors and screens (televisions and computer monitors) owned within households in Canada. They collected data from a random sample of ten households. The number of monitors/screens for the ten households was as follows: 5    8    1    3    3    4    2    7    6    4

A.  Assuming that this variable is normally distributed, construct a 90% confidence interval for the population mean.

B. what does this confidence interval represent?

C. Which of the following would produce a confidence interval with a larger margin of error than the 90% confidence interval? Clearly circle only one response.

A. Sampling only 5 households instead of 10, because 5 are easier to manage. 

B. Sampling 5 households rather than 10, because a smaller sample size will result in a larger margin of error. 

C. Sampling 20 households rather than 10, because a larger sample size will result in a larger margin of error.

 D. Computing an 85% confidence interval rather than a 90% confidence interval, because a larger confidence interval will result in a larger margin of error.