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Suppose the number of hours students at UCI spend studying a day is skewed left. with mean 3 hours and standard deviation 5. A random sample of 200 students is selected. What is the sampling distribution of the average number of hours spent studying per day for the sample of 200 students? Approximately normal with mean 3 hours and standard deviation 5 The distribution of the average number of hours is still skewed with mean 8 hours and standard deviation 5. Approximately normal with mean 8 hours and standard deviation 0.35. What is the probability that the mean hours spent studying for the 200 students in our sample is less [Select] than 7 and a half hours? P945151: 0.07.55 PEXL'IS] = 0.9234 Which is the average hours spent studying representing the 75th percentile? [ Select] qnormKOJS, B, [3.35] or 8.23 onorm(0.?5, B, 5} or 1 1.3745 What is the probability that the average number of hours spent studying [in our sample]I exceeds 9 [ Select] hours? pnormqsa, s, 0.35, |ower.tail = FALSE] or or 0.0021 pnormS'r 8, 5] or [115793 pnormlS', 8, 0.35} or 0.9978