In a symmetric distribution with HH = 48 and standard deviation o = 3 Approximately what percent of the data falls in (48, 54)? Write your answer in the box below without percentage symbol?

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A: Given that, Mean µ=156 Standard deviation σ =15

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Q: G iven:  mean =85    s=12     n =3500 What % of scores are between 97 to 109 ?

A:

Q: Which of these would be considered a transformed score? a. percentile ranks and t scores b. z scores…

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Q: Which of the following statistics would be helpful for measuring dispersion? (the spread

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Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: a. n=2 ∑ni=1xi=20. The mean is b. n=4 ∑ni=1xi=80 The mean is

A: It is given that,Part a) Part b) To find the mean value in both cases.

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A: The given data is as follows:2, 7, 8, 15, 18, 19, 5, 17, 6, 4, 11, 7

Q: What is the mean of the data represented in the frequency table below? 3.75 3.50 2.75…

A: Given: x Frequency (f) fx 1 3 3 2 1 2 3 2 6 4 2 8 5 3 15 6 1 6   ∑f=12 ∑fx=40

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A:

Q: In a data set with a range of 55.4 to 105.4 and 400 observations, there are 276 observations with…

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Q: Fimd the Z score associated with the 15th percentile.

A:

Q: 1.8 2.3 6.7 11.3 16.7 25.2 26.9 27.9

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A: Given: X ∼N (-4,1 ) To find: Between what xx values does 99.72% of the data lie?

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Q: x 1.8 2.3 6.7 11.3 16.7 25.2 26.9 27.9

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Q: 0.25 inches. About 95% of the distribution lies between what two values?

A:

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Q: y=3.1  n= 1.6 standard deviation  Find probability that the child spends less than 3.4 hours a day…

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Q: Calculate the 30th percentile of the data shown x 2 4.7 4.8 8.6 12.3 16.8 19.2 20.7 21.3

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Q: Yi = 5,25,50,100,200.

A:

Q: Calculate the 70th percentile of the data shown x 1 4.3 6 8 20.5 23.3 23.6 25 26.7 29.8

A:

Q: What is the value of the variance when all the data in the set are equal? a. -1 b. 0 c. 1 d. 100%

A: All the sets are equal.

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