2000 freshmen at State University took a math test. The score were distributed normally with a mean of 70 and a standard deviation of 5. Using the Empirical Rule:  a. What percentage of scores is between two standard deviations of the mean?  b. What percentage of scores is less than a score of 55  c. What percentage of scores is more than a score of 80

Q: The number of goals scored by a college soccer team for a given season are 4, 9, 0, 1, 3, 12, 3, 7,…

A: The population mean is, μ=∑xN=4+9+0+1+3+12+3+7+4+5+8+212=5812=4.8333 The population mean is 4.8333.

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A: We have given that  Mean=67.5 Standard deviation=5.2  Find A) P(55.6<x<61)B) P(x>65)

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A: Sample size  = n = 8. Data: 15, 34, 46, 36, 34, 28, 52, 28.

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A: According to the Bartleby guidelines experts solve only one question and maximum three subparts…

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A: 20. a. The mean of the sample is, x¯=∑ixin=10+6+8+6+55=355=7 Thus, the mean of the sample is 7. The…

Q: The value of the stanard error of the mean for the scores :  1,2,3,4,5 ?

A: Solution: Let X be the random variable. The given data is 1, 2, 3, 4 and 5.

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A: Sample size, n = 121 Mean = 49 Variance σ2 = 9 We have to find the standard deviation.

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A: Given data is7,9,10,11,13,22sample size(n)=3

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A: The data is given as 0, 6, 8, 6, 5.

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A: Central tendency : A central tendency (or live of central tendency) may be a typical or central…