You are planning a study to determine if mean height in a population has changed. The populations mean height in 1920 was 64 inches with a standard

deviation of 4 inches. The study needs a big enough sample to detect a change

of 1% with a power 0.8 and a significance of 0.05. How big should the sample

be?

A 307

B 70

C 69.09

D 306.25

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.

How do you write 600 as a product of its prime factors (index! )