Only about 15% of all people can wiggle their ears. Is this percent different for millionaires? Of the 305 millionaires surveyed, 34 could wiggle their ears. What can be concluded at the a = 0.10 level of significance? a. For this study, we should use [Select an answer b. The null and alternative hypotheses would be: Ho: 21 Select an answer H₁: ? Select an answer c. The test statistic ? (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal places.)

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A local convenience store in a large city closes each day at 10 P.M. The owner of the store is investigating whether mean sales will increase by at least $10 per day if the store remains open until 11 P.M. The owner asked the 41 members of a local civic group to estimate the amount of money they might spend during the extra hour. The sample mean was $11.50. The owner will conduct a one-sample tt-test for a population mean. Have the conditions for inference been met?     Yes, all conditions have been met. A No, the sample was not chosen using a random method. B No, the sample size is greater than 10 percent of the population. C No, the sample size is not large enough to assume normality of the sampling distribution. D No, the distribution of the sample is not normal. E