7. The mcasurcments of the drying time, in hours, of a certain brand of latex paint follow a normal distribution. Suppose 22 mcasurements of thc drying times are recorded. The sample mcan and the standard deviation of 22 mcasurements is 3.70 and 0.916, respcc- tively. (a) Construct a 90% confidence interval for the truc mcan measuremcnts of the drying times. Assume that the distribution of the mcasurements of the drying times is approximately normal. (b) Find the 95% confidence interval for the standard deviation of mcasurements of the drying timces.

Q: The historical Average rainfall for Albany N,Y is 36.9 inches a year, with standard deviation of 4.3…

A: To test:H0:μ=36.9H1:μ>36.9

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A: Given data,μ=866σ=159P(X<862)=?

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

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A: Solution

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A:

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