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11) 12 points. A local politician complains that the police have been writing too many speeding tickets and that the average driving speed is no
11) 12 points. A local politician complains that the police have been writing too many speeding tickets and that the average driving speed is no more than 65 mph. The Chief of Police believes that the average speed is higher and obtains the following 9 random samples from automated speed monitoring devices: (69, 64, 70, 67, 68, 63, 68, 71,65) He then performs a hypothesis test using a (0.10) level of significance. Assume the data is normally distributed. Based on the police chief's claim that the average speed is strictly higher than 65 mph, circle the correct hypothesis for the police chief below (a or b): a) The police chief's claim is a null hypothesis. b) The police chief's claim is an alternative hypothesis Calculate and state the sample mean and sample standard deviation: Choose the type of score the chief will have to calculate: Circle one: p-score, z-score, H-score, t-score, or a-score. Next, he must find the p-value making sure he uses a right tail test. Provide the final "p-value" to 3 decimal places the chief would have calculated for his hypothesis test: After calculating the p-value, he then states his conclusion as: "Since our p-value is (high or low) we (reject, fail to reject, or accept) the (null or alternative) hypothesis". Circle one word from each of the choices inside the parentheses
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