Part A-
The lengths of mature jalapeño fruits are normally distributed with a mean of 3 inches and a standard deviation of 1 inch.
What is the probability that a randomly selected mature jalapeño fruit is between 1.5 and 4 inches long?
Find the 90th percentile of the jalapeño fruit length distribution.
If a random sample of 100 mature jalapeño fruits is selected, what is the standard deviation of the sample mean?
Part B-
A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime. Show all work. Just the answer, without supporting work, will receive no credit.