Question

In: Statistics and Probability

Assume that the heights of the bookcases are normally distributed. A random sample of 19 bookcases...

Assume that the heights of the bookcases are normally distributed. A random sample of 19 bookcases in one company have a mean height of 68.5 inches and a standard deviation of 2.9 inches. Test the claim that the SD of the heights of the bookcases is less than 3.0 inches. Use Alpha .01

Solutions

Expert Solution

Answer---->>

Here Critical value calculate from chi-square distribution table.

conclusion :-

There is insufficient evidence to conclude that the standard deviation of of the heights of the bookcases is less than 3 inches


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