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A sample of size 20 yields a sample mean of 23.5 and a sample standard deviation of 4.3. Test H0: Mean 25 at x =

A sample of size 20 yields a sample mean of 23.5 and a sample standard deviation of 4.3. Test H0: Mean 25 at x = 0.10 . HA: Mean < 25. This is a one tailed test with lower reject region bounded by a negative critical value.

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