SCENARIO 12-13
Recent studies have found that American children are more obese than in the past.The amount of
time children spent watching television has received much of the blame.A survey of 100 ten-year-
olds revealed the following with regards to weights and average number of hours a day spent
watching television.We are interested in testing whether the mean number of hours spent watching
TV and weights are independent at 1% level of significance.
12-30 Chi-Square and Nonparametric Tests
-True or False: Referring to Scenario 12-13, the test is always a one-tail test.

Question

SCENARIO 12-13
Recent studies have found that American children are more obese than in the past.The amount of
time children spent watching television has received much of the blame.A survey of 100 ten-year-
olds revealed the following with regards to weights and average number of hours a day spent
watching television.We are interested in testing whether the mean number of hours spent watching
TV and weights are independent at 1% level of significance.  
12-30 Chi-Square and Nonparametric Tests
-True or False: Referring to Scenario 12-13, the test is always a one-tail test.

Quizplus · Accepted Answer

In Scenario 12-13, the test is always a one-tail test because the alternative hypothesis is one-sided (either > or <).

SCENARIO 12-13 Recent Studies Have Found That American Children Are More Obese