Marital Status

Question

What is/are the independent variable(s)? What is/are the dependent variable(s)?

What would be an appropriate null hypothesis? Alternate hypothesis?

What are the degrees of freedom for 1) gender, 2) marital status, 3) interaction between gender and marital status, and 4) error or within variance?
Calculate the mean square for 1) gender, 2) marital status, 3) interaction between gender and marital status, and 4) error or within variance.

Calculate the F ratio for 1) gender, 2) marital status, and 3) interaction between gender and marital status.

Identify the critical Fs at alpha = .05 for 1) gender, 2) marital status, and 3) interaction between gender and marital status.

If alpha is set at .05, what conclusions can you make?
Source Sum of Squares (degrees of freedom [df]) Mean Square Fobt. Fcrit.
Gender 68.15 ? ? ? ?
Marital Status 127.37 ? ? ? ?
Gender * Marital Status (A x B) 41.90 ? ? ? ?
Error (Within) 864.82 ? ? NA NA
Total 1102.24 99 NA NA NA

Question

Suppose an unrelated 77-year-old man, 76-year-old woman, and 82-year-old woman are selected from a community.

(a) What is the probability that all three of these individuals have Alzheimer’s disease?

(b) What is the probability that at least one of the three people has Alzheimer’s disease?

(c) Suppose we know one of the three people has Alzheimer’s disease, but we don’t know which one. What is the conditional probability that the affected person is a woman?