8) The slope of a regression line can sometimes be negative.

Question 8 options:

A) True

B) False

9) The intercept of a regression line must always be positive.

Question 9 options:

A) True

B) False

10) Suppose we test H₀: = 42versus the alternative H_a: 42.The p-value for this test is 0.03, which is less than 0.05, so the null hypothesis will be rejected.

Suppose that after this test, we form a 95% confidence interval for .Which of the following intervals is theonlypossible confidence interval for these data? (Hint: use chapter 13 and the relationship between confidence intervals and hypothesis tests)

Question 10 options:

A) (35, 54)

B) (24, 79)

C) (37, 41)

D) (41, 43)

E) (12, 142)