Question

6.   A claim is made that college students spend 75% of their time on either sleeping or socializing. You do not believe this claim, and you set out to conduct a hypothesis test with the following hypotheses: Ho:   p = 0.75 vs.   Ha:   p ≠ 0.75.   If you gather data from a sample and compute a test statistic equal to -0.6, what would the p-value be?

7.   Return to Question 6. The fact that the test statistic is negative tells us that

A. the sample proportion must be less than the claimed population proportion.

B. the sample proportion must be greater than the claimed population proportion. C. the sample proportion must be equal to the claimed population proportion.

D. a mistake was made in calculations because it’s impossible for a test statistic to be negative.

9.   When you conduct a hypothesis test, which one of the following does not need to be known in order to determine what the p-value should be?

A. The significance (or alpha) level

B. Knowledge of whether the test is one-tailed (or one-sided) or two-tailed (or two-sided)

C. The value of the test statistic

D. All of the above need to be known to determine the p-value.

11. All of the following statements are true except one. Which statement below is false?

A. At a significance level of α = 0.01, we require stronger evidence against the null hypothesis than

when we use a significance level of α = 0.05.

B. At a significance level of α = 0.05, we require stronger evidence against the null hypothesis than when we use a significance level of α = 0.10.

C. A population mean can sometimes be negative.

D. When conducting a two-sided or two-tailed hypothesis test, you must multiply the test statistic by 2.

Answer 1

2.6) The null and alternative hypothesis are Hoi 0.75 vs Haip 70.75. two-fail test- corresponding statistic is I = ² p. Poli-po) å-0.75 ~ M (0) 0.95 (1-0,75) that from question, Test statistic, a= -0.6 "The p-value = 28(24-0.6) = 280.27437 0.5486 0.7) The fact that the test statistic is negative tills as AL", A) the sample proportion (8) must be less than the claimed population proportion (Po). 9 Ans. 20 A) The significance for alpha) level, Note. Por final sonclusion alpha is required but for the estimation of p-value alpha does not required] 2 Q0 The false statiment is Aus when conducting hypotheses last you must multiply two sided or two-tailed 1 est multiply the test statistic by 2.