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A sample of size 20 yields a sample mean of 23.5 and a sample standard deviation...

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 α = 0.10. HA: Mean < 25. This is a one-tailed test with lower reject region bounded by a negative critical value.

Which of the following are:

1) Pvalue 0.135. H0 not rejected. Conclude mean ≥ 25 plausible

2) None of the other answers are correct

3) Pvalue 0.068 H0 rejected. Conclude mean < 25

4) Pvalue 0.932. H0 not rejected. Conclude mean ≥ 25 plausible

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