Math
posted by Jameson .
A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.

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D^2 Y/DX^2 +9Y = 1/Cos(3x)

FACTORIES A factory produces
6 motorcycles in 9 hours. Write a
proportion and solve it to find how
many hours it takes to produce
16 motorcycles. 
1 day 24 hours
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