As part of a wide ranging study of health and nutrition, investigators collected information for a random sample of 4023 college students. Among other statistics they found that for the students in the study the standard deviation in the students' weights (x) was s, 10 kg, the standard deviation in the maximum amount the students could bench-press (y) was sy 20 kg and the correlation between these two variables was ry = 0.6. These statistics tell us that... ... students who gain 15 kgs will increase their maximum bench-press weight by 18 kgs, on average. ... the students who weigh 60 kgs can bench-press 12 kgs more, on average, than the students who weigh 50 kgs. ...on average, students who weigh 70 kgs can bench press 20 kgs more than students who weight 60 kgs. ... on average, students can bench press 60% of their own weight.

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A: To determine the coefficient of x2wa3b in the expansion of x+y+w+a+b7.

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A:

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Q: (5V3)2

A: Explanation of the solution is given below...

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Q: Factor 10k + 1 into a product of primes for k = 1, 2, 3, 4, 5.

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Q: 7. How many terms are there in the multinomial expansion of (x₁ + x₂ + ... .+x)"? ******..

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Q: 10. 15gr, 20s

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Q: (5/6)3

A: Cube means multiplying three times:   563=56×56×56=5×5×56×6×6=5363=125216

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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.