A class distribution is normal with mean of 75 and a standard deviation of 10. Find the following probability a student earned a D in the course. That is, P (60 < X < 70). (Round to the hundredths)

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Q: A class distribution is normal with mean of 75 and a standard deviation of 10. Find the following…

A: Given data; Mean = 75 Standard deviation  = 10 To find: P(X ≥ 90) = ?

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A: Given, μ=72σ=8n=36M=x=72

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A: As per our guidelines we can solve first three subpart and rest can be reposted. Solution-: Let, X=…

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.