Question

The employees of Electronics Inc. would like to have a dental plan as part of their benefits package. The question is: How much does a typical employee and his or her family spend per year on dental expenses? A sample of 44 employees reveals the mean amount spent last year was $1960, with a standard deviation of $620.

a. Construct a 98% confidence interval for the population mean. (Round the final answers to the nearest whole dollar.)

Population mean $  $

b. The information from part (a) was given to the president of Electronics Inc. He indicated he could afford $1800 of dental expenses per employee. Is it possible that the population mean could be $1800?

(Click to select)  Yes.  No.  The population mean  (Click to select)  could be  could not be  $1800 because it is  (Click to select)  in the  not in the  interval constructed above.

Answer 1