I am stuck on the
following review problem on confidence intervals. Could you please
guide me on how to approach this type of problem?
A bakery does not keep
track of the number of chocolate chips they put in their cookies.
The number of chocolate chips is normally distributed with mean µ
and variance σ2 = 25, where µ is unknown. A customer
buys a dozen of these cookies, and obtains the simple random sample
31, 23, 42, 44, 28,...