A consumer advocacy group wants to construct a 90% confidence
interval for the true mean fuel efficiency. They take a random
sample of 64 cars and compute the sample mean to be equal to 35.25.
(Assume that the population standard deviation is still 1 mile per
gallon.) They ask you to construct the 90% confidence interval. The
advocacy group then asks you if there is a 90% chance that the true
mean is between the two numbers you just computed. Please compute
the 90% Confidence Interval and respond to group