Hypothesisi testing

In hypothesis testing, the hypothesis which is tentatively assumed to be true is called the

• correct hypothesis

• null hypothesis

• alternative hypothesis

• level of significance

When the null hypothesis has been true, but the sample information has resulted in the rejection of the null, a _________ has been made.

• level of significance

• Type II error

• critical value

• Type I error

The maximum probability of a Type I error that the decision maker will tolerate is called

• the level of significance

• critical value

• decision value

• probability value

A Type II error is the error of

• accepting Ho when it is false

• accepting Ho when it is true

• rejecting Ho when it is false

• rejecting Ho when it is true

For finding the p-value when the population standard deviation is unknown, if it is reasonable to assume that the population is normal, we use

• the z distribution

• the t distribution with n - 1 degrees of freedom

• the t distribution with n + 1 degrees of freedom

• None of the above

A hypothesis test in which rejection of the null hypothesis occurs for values of the point estimator in either tail of the sampling distribution is called

• the null hypothesis

• the alternative hypothesis

• a one-tailed test

• a two-tailed test

If a hypothesis is rejected at the 0.025 level of significance

• must be rejected at any level

• must be rejected at the 0.01 level

• must not be rejected at the 0.01 level

• d. must not be rejected at any other level

In hypothesis testing, the level of significance is

• the probability of committing a Type II erro

• the probability of committing a Type I error

• the probability of either a Type I or Type II, depending on the hypothesis to be tested

• none of the above

In hypothesis testing, b is

• the probability of committing a Type II error

• the probability of committing a Type I error

• the probability of either a Type I or Type II, depending on the hypothesis to be tested

By taking a level of significance of 5% it is the same as saying

• We are 5% confident the results have not occurred by chance

• We are 95% confident that the results have not occurred by chance

• We are 95% confident that the results have occurred by chance