How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and released for the first time in the San Andres Mountains gave the following weights (pounds):

73 108 126 129 60 64

Assume that the population ofxvalues has an approximately normal distribution.

(a) Use a calculator with mean and sample standard deviation keys to find the sample mean weightxand sample standard deviations.

Find a 75% confidence interval for the population average weightof all adult mountain lions in the specified region. (Round your answers to one decimal place.)

Upper Limit

Lower Limit