Which of the following statements are TRUE?I. A two-tailed test on a large sample with a s
Which of the following statements are TRUE?
I. A two-tailed test on a large sample with a significance level of .01 has confidence intervals of + 1.96 s/ n.
Ⅱ. A hypothesized mean of 3, a sample mean of 6, and a standard error of the sampling means of 2 give a sample Z-statistic of 1.5.
Ⅲ. A Type I error is rejecting the null hypothesis when it was true and a Type Ⅱ error is accepting the alternative hypothesis when it is false. IV. When the sample Z-statistic is greater than the critical Z-statistic in a two-tailed test you should reject the null hypothesis and accept the alternative hypothesis.
A.I and Ⅲ only.
B.Ⅱ and IV only.
C.Ⅱ, Ⅲ, and IV only.
D.I, Ⅱ, Ⅲ, and IV.