Question

3. From the data below of different types of motel rooms and their cost per night, randomly select a stratified sample of 10, including the observations that you selected. Then determine the mean cost for the room sample and find the sampling error, if the population mean is $123.15.

Type of room Cost per night    Type of room    Cost per night

Smoking $78   Smoking $110

Smoking $100. Smoking $50

Smoking $85 Smoking $180

Smoking $75 Smoking. $105

Smoking $120 Non-smoking $496

Smoking $80 Non-smoking $188

Smoking $140 Non-smoking $280

Smoking $165 Non-smoking $350

Smoking $98

Smoking $200

Smoking $150

Smoking $240

Answer 1