15 It is desired to test Ho 50 against Ha 50 using 0 07 The population in question is uniformly distributed with standard deviation 20 0 A random sample of size 64 will be drawn from the population Complete parts (a) through (d) a Describe the (approximate) sampling distribution of x under the assumption that Ho is true Choose the correct answer below A The sampling distribution of x will be normal with 45 and 2 5 B The sampling distribution of x will be approximately normal with 45 and 2 C The sampling distribution of x will be approximately normal with x 50 and 2 5 D The sampling distribution of x will be approximately normal with 50 and 2 b Describe the (approximate) sampling distribution of x under the assumption that the population mean is 45 Choose the correct answer below A The sampling distribution of x will be approximately normal with 45 and 2 OB The sampling distribution of x will be approximately normal with H 45 and 2 5 C The sampling distribution of x will be approximately normal with 50 and 2 5 OD The sampling distribution of x will be normal with 50 and 2 c If were really equal to 45, what is the probability that the hypothesis test would lead the investigator to commit a Type II error (Round to four decimal places as needed ) d What is the power of this test for detecting the alternative H 45 The power of this test is (Round to four decimal places as needed )

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15. It is desired to test Ho: =50 against Ha: <50 using =0.07. The population in question is uniformly distributed with standard deviation 20.0.

15. It is desired to test Ho: =50 against Ha:

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