3. A sociologist is studying marriage customs in a rural community in Denmark. A random sample of 35 women who have been married was used to determine the age of the woman at the time of her first marriage. The sample standard deviation was 2.3 years. How many women should be included in the sample to be 95% confident that the sample mean of ages is within.25 year of the population mean?

Q: w + 4 w + 10 6. 8.

A:

Q: n. Find the probability that if the wife is watching television, the husband is alse watching…

A: Let us define some events A : husband is watching television. B : husband is not watching…

Q: Consider F(x) = = F(0) = 0 F'(3) = 6 F'(1) = 0 O F'(4) = 10 F'(2) = 2 I tf(t) tf(t) dt. Which of the…

A:

Q: 1b+1b

A: Applying  addition operation since terms with same variable  binomial addition

Q: w + (-7), when w = - 1

A: The expression is given by w+(-7) To evaluate: The value of the expression when w=-1.

Q: (4x)2

A: To evaluate(4x)2

Q: -5 -2 1

A:

Q: X5 y / x4 y6

A: Given: x5yx4y6

Q: 4a5b• V18a3b6

A: We have to find

Q: -3 -2 -1 1 2 0000000 3.

A:

Q: -2 -4 and D = 4 8

A:

Q: J4ー Ax

A:

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.