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Presidents. Refer to Problem 12 .

a. Find the conditional distributions of birth region by party and the marginal distribution of birth region.

b. Does an association exist between the variables "birth region" and "party" for the U.S. presidents? Explain your answer.

c. What percentage of presidents were born in the South?

d. If no association existed between birth region and party, what percentage of Republican presidents would have been born in the South?

e. In reality, what percentage of Republican presidents were born in the South?

Short Answer

Expert verified

The shape of the distribution is uniform distribution

Step by step solution

01

Given Information

(a)

When the shape of the distribution is shaped

02

Definition

(b)

When the shape of distribution is Right skewed

03

Definition

(c)

When the shape of distribution is Reverse J shaped distribution

04

Definition

(d)

When the shape of the distribution is uniform distribution

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12.70 five and three

In each of the given Exercises, we have given the number of possible values for two variables of a population. For each exercise, determine the maximum number of expected frequencies that can be less than 5 in order that Assumption 2 of Procedure 12.2 on page 506 to be satisfied. Note: The number of cells for a contingency table with m rows and n columns is mโ‹…n.

12.72 four and three

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