Mathematics, 22.04.2020 23:40, Nobleufia
Suppose x has a distribution with a mean of 50 and a standard deviation of 20. Random samples of size n = 64 are drawn. (a) Describe the x distribution and compute the mean and standard deviation of the distribution. x has a normal distribution with mean = and standard deviation or = (b) Find the z value corresponding to x = 55. (c) Find P(x < 55). (Round your answer to four decimal places.) P(x < 55) = (d) Would it be unusual for a random sample of size 64 from the x distribution to have a sample mean less than 55? Explain. No, it would not be unusual because more than 5% of all such samples have means less than 55. Yes, it would be unusual because less than 5% of all such samples have means less than 55. • No, it would not be unusual because less than 5% of all such samples have means less than 55. Yes, it would be unusual because more than 5% of all such samples have means less than 55.
Answers: 2
Mathematics, 21.06.2019 19:00, jadabecute3739
Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?
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Mathematics, 21.06.2019 20:00, sportie59
Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?
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Mathematics, 21.06.2019 23:40, averycipher
Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5
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Suppose x has a distribution with a mean of 50 and a standard deviation of 20. Random samples of siz...
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