Author Question: A cell phone company wants to determine if the use of text messaging is independent of age. The ... (Read 76 times)

SAVANNAHHOOPER23 · **on:** Jun 24, 2018

A cell phone company wants to determine if the use of text messaging is independent of age. The following data has been collected from a random sample of customers.

Regularly use text messaging Do not regularly use text messaging
Under 21 82 38
21-39 57 34
40 and over 6 8

Using this data, if we wish to test whether the preferred news source is independent of age using a 0.05 level of significance, the critical value is 5.9915.
Indicate whether the statement is true or false

Question 2

When the correlation coefficient for the two variables was -0.23, it implies that the two variables are not correlated because the correlation coefficient cannot be negative.

Indicate whether the statement is true or false