H3.

A random sample of 100 packs of apples with a professed weight of 1kg was found to have mean 1020g and standard deviation 12g. a) Find a 95% confidence interval for the mean weight of all such packs of apples. b ) Does the interval include 1kg? Can you think of a reason (which any retailer would be able to tell you) why you might expect the interval not to include 1kg? c) What confidence level would have resulted in the interval just about including 1kg