7. True or False: a. (1) Compared to using ?-0.01, choosing ? 0.001 will make it

Question

7. True or False: a. (1) Compared to using ?-0.01, choosing ? 0.001 will make it less likely that a true null b. (1) In a right-tailed test, the null hypothesis is rejected when the value of the test C. (1) If the alternative hypothesis is ? > 50, we have a left-tailed test. hypothesis will be rejected. statistic exceeds the critical value. d. (1) The test statistic for a test that compares the means of two independent samples can be negative. (1) With pooled data, we must have an equal number of observations in each sample group. e. f. (1) The number of data points need for a two-factor with replication ANOVA, where g. (1) A hypothesis test that compares the medians from two groups uses the t distribution h. (1) If every observation in our sample has a value below the benchmark median, then factor A has 4 possible values and factor B has 3 possible values, is 12. to find critical values. the test statistic for the Wilcoxon Signed Rank test is 0.

Explanation / Answer

(a) TRUE

REASON: If the p-value is less than alpha then we reject the null hypothesis. but if alpha is very less(.001) then p-value can be greater than alpha and in this case, we fail to reject the null hypothesis. Hence, less value of alpha will make it less likely that a true null hypothesis will be rejected.

(b) TRUE

(c) FALSE

Reason: (if mu > 50 then we have a right-tailed test )

(d) TRUE

(e) False

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