Final Exam

Question 1

Acme Toy Company prints baseball cards. The company claims that 30% of the cards are rookies, 60% veterans, and 10% are All-Stars.

Suppose a random sample of 100 cards has 50 rookies, 45 veterans, and 5 All-Stars. Is this consistent with Acme's claim? Use a 0.05 level of significance.

What are the steps used to solve the above problem.

NOTE: There are multiple answers.

Question 2

In the equation for a straight line, "b" represents the ____.

Question 3

A linear relationship requires that .

Question 4

Which of the following statistical tests is most appropriate for analyzing the data from a

one-factor within-subjects design with two treatment conditions and ordinal measures of

the dependent variable?

Question 5

Given the following hypotheses, which statement is correct?

Question 6

The purpose of a linear regression line is to _.

Question 7

Fisher's exact test deals with _.

Question 8

A statistical hypothesis is:

Question 9

The difference between a predicted and obtained value of Y when using a linear regression line is

Question 10

Chi-square is sometimes called a test of .

Question 11

The Wilcoxon signed-ranks test is appropriate for analyzing data from a design using

levels of an independent variable.

Question 12

The alternative hypothesis for the Wilcoxon signed-ranks test is H1:

Question 13

What is tobt for the following research study:

= 498

= 513

s = 97

n = 142

Question 14

When we fail to reject the null hypothesis, which of the following is true?

Question 15

Suppose you ran a chi-square test of independence on a 2× 2 contingency table.

If the null hypothesis is true for this chi-square analysis, then you would expect

Question 16

To find the value of Tcrit, you must know.

Question 17

Multiple regression line is assumed to ______.

Question 18

Hypothesis testing is a test of the _ hypothesis.

Question 19

When we reject the null hypothesis, which of the following is true?

Question 20

When two scores are obtained from each subject, a _distribution is obtained.

Question 21

The hypothesis that describes what the researcher expects to see happen in the experiment is the:

Question 22

Failing to reject the null hypothesis when it should have been rejected is an example of a:

Question 23

A correlational study is designed to _.

Question 24

The slope for a least-squares regression line is defined as the correlation coefficient multiplied by the .

Question 25

The process of using sample statistics to test a claim about the value of a population parameter is referred to as:

Question 26

The direction and degree of the relationship of two variables are assessed with .

Question 27

If the results of a study using the Wilcoxon signed-ranks test were reported as T = 56 (N = 73), p <>.05, then you would know that the value of Tobs was based on scores.

Question 28

The statistic used for the Wilcoxon signed-ranks test is .

Question 29

In a research study, tobt = -5.387 and tcrit = 2.145. Which of the following conclusions is true?

Question 30

Each time variable X increases by one unit, variable Y decreases by 1.3 units. Variables X and Y are____related.

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