Author Question: A traffic officer is compiling information about the relationship between the hour or the day and ... (Read 51 times)

hubes95 · **on:** Jul 24, 2018

A traffic officer is compiling information about the relationship between the hour or the day and the speed over the limit at which the motorist is ticketed. He computes a correlation coefficient of 0.12. What does this tell the officer?

A) There is a weak positive linear correlation.
B) There is a moderate positive linear correlation.
C) There is a moderate negative linear correlation.
D) There is insufficient evidence to make any conclusions about the relationship between the variables.

Question 2

Suppose you want to test the claim that > 25.6. Given a sample size of n = 53 and a level of significance of = 0.01, when should you reject H0?

A) Reject H0 if the standardized test statistic is greater than 2.33.
B) Reject H0 if the standardized test statistic is greater than 1.96.
C) Reject H0 if the standardized test statistic is greater than 2.575.
D) Reject H0 if the standardized test statistic is greater than 1.645.