Question

Which of the following is a two-tailed hypothesis? Select one:

a. A marketing campaign will affect sales.

b. A marketing campaign will increase sales.

c. A marketing campaign will decrease sales.

d. All of the above

In a study, the expected mean of the sample receiving Treatment A is 356. Under the null hypothesis, what is the expected mean of the sample receiving Treatment B?

Select one:

a. There is not enough information to tell

b. 178

c. 356

d. 0

In a t test, with what is the observed difference between the means compared?

Select one:

a. The difference between the population means.

b. The difference between sample means that would occur when the null hypothesis is false.

c. The difference between sample means that would occur when the null hypothesis is true.

d. The difference between all possible pairs of sample means for samples of all possible sizes.

When you compare your t-value to your critical value in the positive tail, where do you NOT want it to be?

Select one:

a. above your critical value

b. on your calculator

c. above 3 standard errors

d. between zero and the critical value

Answer 1

Which of the following is a two-tailed hypothesis? Select one:

a. A marketing campaign will affect sales.

In a study, the expected mean of the sample receiving Treatment A is 356. Under the null hypothesis, what is the expected mean of the sample receiving Treatment B?

a. There is not enough information to tell

In a t test, with what is the observed difference between the means compared?

Select one:

a. The difference between the population means.

When you compare your t-value to your critical value in the positive tail, where do you NOT want it to be?

a. above your critical value