1.Hypothesis Test - Pooled vs separate variances

In a test of 2 means, use the separate variances calculations unless pooled variances or equal variances is known or specified.

True

False

2.The following scores measure performance of three different newspapers:

Paper1:1 3 4

Paper2:4 5 6 6 7 8 9

Paper3:2 3 3 4

At = 0.05, are the newspapers equal in performance?

Question 2 options:

a.The means are different

b.The means are not different

c.Not enough information to determine

3.You toss a fair 6-sided die 186 times. What is the expected frequency for the face with two dots?

4. For a CHISQ test test of independence, if H0 is not rejected, counts are considered independent of categories in a contingency table. The categorical values are for identification only.

True

False

5. For a CHISQ test of goodness of fit, if H0 is rejected, the assumed model is considered a good fit to the data

True

False

6. Regression results are intercept = -0.9 and slope = -1.1. Enter estimate of Y at X = -1.21 with 2 decimal places.