What is the standard deviation

Reference no: EM131009024

1. Grocery supplier

A grocery supplier believes that the mean number of broken eggs per dozen is 0.6, with a standard deviation of 0.5. You buy 3 dozen eggs without checking them.

a) How many broken eggs do you expect to get?

b) What's the standard deviation?

2. Is it necessary to assume the cartons of eggs are independent? Why?Commuting, part 2. A commuter finds that she waits an average of 14.8 seconds at each of five stoplights, with a standard deviation of 9.2 seconds. Find the mean and the standard deviation of the total amount of time she waits at all five lights. What, if anything, did you assume?

Reference no: EM131009024

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