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An energy company wants to choose between two regions in a state to install energy-producing wind turbines. A researcher claims that the wind speed in
An energy company wants to choose between two regions in a state to install energy-producing wind turbines. A researcher claims that the wind speed in Region A is less than the wind speed in Region B. To test the regions, the average wind speed is calculated for 90 days in each region. The mean wind speed in Region A is 13.9 miles per hour. Assume the population standard deviation is 2.7 miles per hour. The mean wind speed in Region B is 15.1 miles per hour. Assume the population standard deviation is 3.2 miles per hour. At alphaequals0.05, can the company support the researcher's claim? Complete parts (a) through (d) below. Question content area bottom Part 1 (a) Identify the claim and state Upper H 0 and Upper H Subscript a. What is the claim? A. The wind speed in Region A is not greater than the wind speed in Region B. B. The wind speed in Region A is not less than the wind speed in Region B. C. The wind speed in Region A is less than the wind speed in Region B. Your answer is correct.D. The wind speed in Region A is the same as the wind speed in Region B. Part 2 Let Region A be sample 1 and let Region B be sample 2. Identify Upper H 0 and Upper H Subscript a. Upper H 0: mu 1 greater than or equals mu 2 Upper H Subscript a: mu 1 less than mu 2 Part 3 (b) Find the critical value(s) and identify the rejection region. The critical value(s) is/are z 0equals negative 1.64. (Round to two decimal places as needed. Use a comma to separate answers as needed.) Part
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