Questions 3a through 3d are based on a distribution of scores with x= 75 and the standard deviation = 6.38. Draw a small picture to help you see what is required.   What is the probability of a score falling between a raw score of 70 and 80? What is the probability of a score falling above a raw score of 80? What is the probability of a score falling between a raw score of 81 and 83?

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A: Answer:  From the given data , the set of numbers 4,6,5,3 and 8 the first and second moments are,

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A: Given that Z has standard normal distribution  P(Z>c)=0.1357

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A: We need to construct truth table for the statement. p V (p  ~p)

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Q: State or specify the null and alternative hypotheses in the following (use complete statements, t…

A: According to guidelines we solve only first question when given questions are different.

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Q: Use the given sample data to find Q3.   49 52 52 52 74 67 55 55           Question content area…

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Q: 7. Find the function U, whose first difference is *C

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Q: (a) above 30, (b) above 20, (c) above 18,

A: given datanormal distributionμ=17σ=5

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Q: Ethnicity: African American Frequency: 47 LAUSE SALT Asian Caucasian 11 HP₁ P₂ P₂P,-0.250 H, at…

A: Given: Ethnicity African| American Asian Caucasian Hispanic total frequency 47 11 330 5 393…

Q: I cant really tell what the answer to b and C are? is it (-0.8333) and z=1.751

A: The mean and the standard deviation are12.1 and 0.12, respectively.

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Q: Time(min)      # of students  10-19                  8  20-29                 15  30-39…

A: class f x f*x cf 10-19 8 14.5 116 8 20-29 15 24.5 367.5 23 30-39 22 34.5 759 45 40-49 18…

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A: Given: Meanμ=74.13Standard deviation(σ)=9.98 Z score: z=x-μσ

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Q: Suppose p(x, y) = = 2x+y -₂x = 1, 2, 3, y = 1, 2 is the joint pmf of X and Y. Determine P (Y= 1). 33

A: