SAT Scores The national average for mathematics on a standardized test in 2011 was 523. Suppose that the distribution of scores was approximately bell- shaped and that the standard deviation was approximately 46. Round your answers to at least one decimal place as needed. Part: 0/2 Part 1 of 2 (a) Within what boundaries would you expect 68% of the scores to fall? About 68% of the scores should fall between and X

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A: GivenMean(μ)=70standard deviation(σ)=2.8

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A: Mean(µ) = 100Standard deviations (σ) = 15X ~ N (µ, σ )= N(100, 15)

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A:

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A: Given data,For TEST A:Mean=670sd=80Test score=950For TEST B:Mean=2.7sd=0.4Test score=4.6

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A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

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A: Given information Mean = 100 Standard deviation = 15 P(X > x) = 0.65 P(X < x) = 1 – 0.65 =…

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A: The graph depicts IQ scores of adultsThe scores are normally distributed.Mean () = 100Standard…

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A: The mean and standard deviation are 100 and 15.

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A: Given,   Mean = 100 Standard deviation = 15

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A: Population mean=100 , population standard deviation =15

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A:

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A: From the provided information, Mean (µ) = 260 days Standard deviation (σ) = 16 days X~N (260, 16)

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A: Given data: Mean = 950 Standard deviation = 200 To find: How many students took the SAT?

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A: Let , X→N(μ=100 , σ=15) Our aim is to find the value of the indicated IQ score.

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A:

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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

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Q: None

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A: Given that.   X~N( μ , ?)   μ=100     , ?=15   Z-score =( x - μ )/?

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A: Given: Cameron’s score = 41 Mean μ = 36 Standard deviation σ = 2 Formula Used: Z-score = X-μσ