Chapter 11 Quiz

In order to determine the p-value, which of the following is not needed?

In testing the hypotheses
H0 : µ = 50
H1 : µ ≠ 50
the following information is known: n = 64, x̄ = 53.5, and σ = 10. The standardized test statistic equals:

If a hypothesis is not rejected at the 0.10 level of significance, it:

In testing the hypothesis
H0 : µ = 800
H1 : µ ≠ 800
if the value of the test statistic equals 1.75, then the p-value is:

If a hypothesis is rejected at the 0.025 level of significance, it:

The power of a test is the probability of making:

A Type II error is committed if we make:

A Type I error is committed if we make:

Which of the following p-values will lead us to reject the null hypothesis if the level of significance equals 0.05?

Suppose that we reject a null hypothesis at the 0.05 level of significance. Then for which of the following α-values do we also reject the null hypothesis?

Using the confidence interval when conducting a two-tail test for the population mean µ we do not reject the null hypothesis if the hypothesized value for µ:

In a one-tail test for the population mean, if the null hypothesis is not rejected when the alternative hypothesis is true,

In a two-tail test for the population mean, the null hypothesis will be rejected at α level of significance if the value of the standardized test statistic z is such that:

In testing the hypothesis
H₀: µ = 100
H₁: µ > 100
the p-value is found to be 0.0738, and the sample mean is 105. Which of the following statements is true?

A spouse stated that the average amount of money spent on Christmas gifts for immediate family members is above $1200. The correct set of hypotheses is:

The probability of a Type I error is denoted by:

The probability of a Type II error is denoted by:

The power of a test is denoted by:

If we reject the null hypothesis, we conclude that:

In a given hypothesis test, the null hypothesis can be rejected at the .10 and .05 level of significance, but cannot be rejected at the .01 level. The most accurate statement about the pvalue for this test is:

In a criminal trial, a Type II error is made when:

In a one-tail test, the p-value is found to be equal to 0.068. If the test had been two-tail, the p-value would have been:

If the value of the sample mean x̄ is close enough to the hypothesized value of the population mean µ , then:

We cannot commit a Type I error when the:

The rejection region for testing
H0 : µ = 100
H1 : µ ≠ 100
at the 0.05 level of significance is:

The p-value criterion for hypothesis testing is to reject the null hypothesis if: