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Suppose that scores on a particular test are normally distributed with a mean of 130 and a standard deviation of 19. What is the minimum
Suppose that scores on a particular test are normally distributed with a mean of 130 and a standard deviation of 19. What is the minimum score needed to be in the top 10% of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to one decimal place. [D x6)? Captain Crave Seafood is a large restaurant chain. After paying for a meal at Captain Crave Seafood, customers are asked to rate the quality of the food as a 1, 2, 3, 4, or 5, where a rating of 1 means "not good" and 5 means "excellent". The customers' ratings have a population mean of p 24.60, with a standard deviation of (5 = 1.94. Suppose that we will take a random sample of n = 10 customers' ratings. Let ; represent the sample mean of the 10 customers' ratings. Consider the sampling distribution of the sample mean E. Complete the following. Do not round any intermediate computations. Write your answers with two decimal places, rounding if needed. (a) Find it; (the mean of the sampling distribution of the sample mean). u=[l] X b ? X (b) Find 6 (the standard deviation of the sampling distribution of the sample mean). X s=|] x b
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