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2 Questions returned
No. & Date AskedQuestion
# 570 :: 1/7/09
Question 570 has been Answered		 How can a t test be employed in hypothesis testing by the use of directional versus nondirectional hypothesis. . .

directional test, 1-tailed test

# 540 :: 12/9/08
Question 540 has been Answered		 A sample of 36 observations is selected from a normal population. The sample mean is 21, and the sample standard deviation is 5. Conduct the following. . .

1-sample t-test, 1-tailed test, Null Hypothesis , calculating mean, sample variance, Standard Deviation