Question

U Question 4 8 pts The heights of people in a certain population are normally distributed with a mean of 66 inches and a standard deviation of 3.2 inches. Determine the mean and standard deviation for sampling distribution of means for samples of size n = 42. mean - 10.2. standard deviation-0.494 mean 66, standard deviation - 0.494 O mean = 60, standard deviation 0.494 mean - 10.2. standard deviation - 32 mean - 66, standard deviation - 3.2 Question 5 8 pts The National Weather Service keeps records of rainfall in valleys. Records indicate that in a certain valley, the annual rainfall has a mean of 80 inches and a standard deviation of 24 inches. Suppose the rainfalls are sampled during randomly picked years, and is the mean amount of rain in these years. For samples of size 49 determine the mean and standard deviation of the sampling distribution for 3 mean -80, standard deviation - 3.43 mean - 11.4. standard deviation - 24 mean - 80 standard deviation - 24 mean - 11.4, standard deviation = 3.43

Answer 1

4, Guim, n=42 H=66 3. 2 M = ㅆ=166 3. 4 XI o.1 9377 0 71988 II 2 이속 12. 이 0494 option (B) is correct. 5. Guillen, M=80 - 2 n=49 M r80 : 2 3.128 SAT 28 5 } २५ 19 | 이속 3. 3 option (A) is correct.