We want to compare 6 different group means. Which of the following statistical analyses avoids increasing the overall family-wise error rate?

Which of the following data types can be used with t-tests?

Interval

Ordinal

Nominal

Match the following tests with their description

Z Test

Paired t-test

F Test

Student's t-test

Test to see if the variances of two samples are not statistically significantly different

Test to see if the difference between two sample means is greater than the standard error of the difference

Test to see if there is a difference between two independent groups

Test to see if there is a difference in the same sample, with the two groups being before and after an intervention

Which of the following t-test confidence intervals indicate that there is a statistically significant difference between groups?

-15.23 to 23.12

-2.57 to -1.58

-0.05 to 5.47

-12.87 to 0.03

Which of the following confidence intervals would be associated with a p-value of 0.34, assuming an alpha of 0.05?

-2.54 to 1.38

-35.23 to -23.72

0.19 to 0.89

-15.05 to -5.47