6) Assume that in 2018 the mean mathematics SAT score was 524 and the standard deviation was 117. A sample of 68 scores is chosen. a) What is the sampling distribution of X, the sample mean? b) What is the probability the sample mean score is less than 512?

Q: a. What is the standard error of the mean in men? What is it in women? Assume that the sampling was…

A: n1 = 4620 n2 = 6228 x1 = 3.8 x2 = 2.4 s1 = 6.7 s2 = 4.6

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A: Given,sample size(n)=40mean(μ)=15standard deviation(σ)=7

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A: Solution :-

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A: We have given that.   X~N( μ , ?^2 )   μ=939 , ?=245   , n/50   Z-score =( x - μ )/?   NOTE:-…

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A: It is given that mean is 28.29 and the standard deviation is 33.493.

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A:

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A: Given that mu =26 ,sigma =4,n =115 p( x bar > 27 ) =?

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A: n = 200 mean = 300 s = 56

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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.