A study of a local high school tried to determine the mean amount of money that each student had saved. The study surveyed a random sample of 87 students in the high school and found a mean savings of 4200 dollars with a standard deviation of 800 dollars. Determine a 95% confidence interval for the mean, rounding all values to the nearest whole number.

Q: what's the answer ?

A:

Q: What’s 20+20

A: Topic : addition

Q: Just the answer

A: Consider the following:

Q: What's the Answer

A:

Q: How do you find the B value?

A:

Q: What's the answer?

A: Since you have posted multiple question, we will solve only first question for you. To get remaining…

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Q: 15+c=-12

A:

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A:

Q: B+A=18 B=

A: B + A = 18

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A:

Q: What's half of 60

A: Please refer the attached image for complete solution.

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A: SOLUTION-

Q: What’s 3 + 3 =

A: Given expression 3+3

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.