ontractor decided to build homes that will include the middle 80% of the market. if the average size of homes built is 1750 square feet, find the maximum and minimum sizes of the homes the contractor should build. assume that the standard deviation is 96 square feet and the variable is normally distributed

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. the design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307