Exam 17: Hypothesis Testing: Basic Concepts and Tests of Association

Use the following information for questions Observation The numbers in each cell represent the sales level in thousands of dollars. -Which of the following is/are true? 1-The sum of squares within rows will be given by 5 3 _ $\Sigma$$\Sigma$ X_ip - X_p)² i=1 p=1 2-The sum of squares within rows will be given by 3 _ $\Sigma$ X_p - X)² p=1 3-The sum of squares within rows will be given by 5 5 _ $\Sigma$$\Sigma$ X_ip - X)² i=1 p=1 4- 5 3 _ 5 3 _ 3 _ _ $\Sigma$ $\Sigma$ X_ip - X)² = $\Sigma$ $\Sigma$ X_ip - X_p)² + $\Sigma$ X_p - X)² i=1 p=1 i=1 p=1 p=1

Use the following information for questions -According to the data above, which of the following is true? Let $\chi$ ² = $\Sigma$ O_i - E_i)² E_i

If the sample size increases, the p-value will usually become smaller.

A high p-value means that the probability of a statistically significant difference is high.

If an analyst computes "marginal," he or she simply computes frequency distributions for the individual questions.