Question: Hi i am having problems solving these questions may need some help and explaination. Thank you. Question #3 A researcher working for an insurance company

Hi i am having problems solving these questions may need some help and explaination. Thank you.

Question #3 A researcher working for an insurance company wants to estimate the average cost to repair smoke and re damage [in dollars) from home res caused by careless use of tobacco. A random sample of 55 res caused by careless use of tobacco products was obtained. The sample mean cost to repair the damage was $19,100. Using past years' data, the population standard deviation can be assumed known, and equal to $3,027. (a) Construct a 95% condence interval estimate of the mean cost to repair smoke and re damage that results from home res caused by careless use of tobacco. [3 marks] (b) Provide an interpretation of the interval estimate in part (a). [2 marks]

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