Evaluation 1. A population has mean 75 and standard deviation 12. a. Random samples of size 121 are taken. Find the mean and standard deviation of sampling distribution of the means? b. How would the answers to part (a) change if the size of the samples were 400 instead of 121? 2. The scores of individual students on a national test have a normal distribution with mean 18.6 and standard deviation 5.9. At Federico Ramos Rural High School, 76 students took the test. If the scores at this school have the same distribution as national scores, what are the (a) mean and (b) standard deviation of the sample mean for 76 students?

Q: QNo. 2. Suppose your statistics professor gave six examinations during the semester. You received…

A: Given : No. of Exam score (N) = 679  84  82  82  84  77Select exam scores(n) = 2

Q: The mean is approximately (Round to the nearest whole number as needed.)

A: It is given that  n1 = 7 X̄1 = 240 n2 = 4 X̄2 = 190

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Q: 12. Below is a data set for number of toys a child owns in a particular neighborhood: ABCDEFG|H…

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Q: Q. 14 What is the difference between sample mean and population mean?

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Q: 4. Given the two sample data sets A and B: A: 1 4 7 18 B: 6 7 7. a. Compute the mean of each…

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Q: 4. A numerical measure from a population, such as a population mean, is called a.…

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Q: Draw all possible samples of size 3 without replacement from the population (93), (94), (95), (96),…

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Q: d help with A,B,and C

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Q: 4) Which of these samples would have the smallest standard deviation? a. 101, 92, 84, 131 b. -25,…

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Q: if the 90% Ci for the population mean is ( -2.58, 7.54) what is the sample mean

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Q: 1. IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ…

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Q: 4. The variance of a data set is 3410.56. Find the standard deviation for the data set.

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