Only about 19% of all people can wiggle their ears. Is this percent different for millionaires? Of the 389 millionaires surveyed, 89 could wiggle their ears. What can be concluded at the a = 0.01 level of significance? The null and alternative hypotheses would be: Ho: ?V Select an answer (please enter a decimal) H.: Select an answer (Please enter a decimal)

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A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 9.5. You believe that average may be different in Hartsville. State the null and alternative hypothesis for the claim that the average number of screens per household in Hartsville is not 9.5. Select your answer from one of the following options. a. ?0:?≥9.5??:?<9.5 b. ?0:?=9.5??:?≠9.5 c. ?0:?>9.5??:?≤9.5 d. ?0:?≠9.5??:?=9.5 e. ?0:?≤9.5??:?>9.5

A baseball team claims that the mean length of its games is 2.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is​ left-tailed, right-tailed, or​ two-tailed. Explain your reasoning.       State the null hypothesis in words and in symbols. Choose the correct answer below.     A. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is at most 2.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≤2.4​."   B. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is more than 2.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≠2.4​."   C. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is at least 2.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≥2.4​."   D. The null hypothesis expressed in words​ is, "the mean length of a baseball​…

In a hypothesis test, H0 is p < 0.45 and Ha is p > 0.45. If the test statistic is z = 1.68, what is the P-value? Draw picture and give P-value only. Do not do rest of testing.

The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. I need help with part C. Thank you!

A survey was done where one question asked of the participants was, “How many meals per week do you typically eat at a restaurant”.  The numerical answers ranged from a low of 0 to a high of 12.  How could you ask a question that would treat this as a categorical variable?  Give the question and give the choices for the answer.

A baseball team claims that the mean length of its games is more than 1.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is​ left-tailed, right-tailed, or​ two-tailed. Explain your reasoning.       State the null hypothesis in words and in symbols. Choose the correct answer below.     A. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is not 1.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≠1.4​."   B. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is at least 1.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≥1.4​."   C. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is at most 1.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≤1.4​."   D. The null hypothesis expressed in words​ is, "the mean length of a…