## (solution) FINAL Part 1 1. QUESTION 1 In 2012, the Pew Research Center

Statistics questions for final please see attachment.

FINAL Part 1 1. QUESTION 1

In 2012, the Pew Research Center conducted a survey of 1,511 Americans to

assess their opinion of global warming. The data show that 589 respondents of the

1,511 surveyed felt that global warming is a very serious problem. Estimate the proportion of all adult Americans who felt global warming is a very serious problem

at the 95 percent confidence interval.

0.365 to 0.415

0.432 to

0.518

0.278 to

0.361 0.356 to 0.424 8 points QUESTION 2

1.

There is a relationship between the number of hours an individual spends

exercising and the amount of weight the individual loses such that the less an

individual exercises, the less weight the individual will lose.

IV =

IV Level of Measurement =

DV =

DV Level of Measurement =

UA =

Relationship = For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). Path: p » span

Words:40 8 points QUESTION 3

1.

Using the critical values table on p. 409 of the Sirkin (2006) text, which of the

following chi-square values and associated degrees of freedom is significant at the .01

level?

6.85 (df = 3) 3.84 (df = 2)

11.34 (df =

3)

15.67 (df =

4)

8 points QUESTION 4

1.

Questions that pertain to ?what is? would be considered which of the following?

Empirical Normative

Behavioral QUESTION 5

1.

What should be included in the footnote of the table?

Date table was produced 8 points The n-values

How percentages were calculated

Source of the data 8 points 1. QUESTION 6

When we comparing means from two groups in which members of one sample

are determined by the members of the other, what type of t test is being used?

Normal t test Independent

samples t test

Dependent sample t test

One-sample t test 8 points QUESTION 7

1.

Suppose you want to examine the beliefs that mothers and fathers have about

their two-year-old child?s behavior. You want to examine these beliefs by comparing

scores that the two parents receive on an early childhood parent inventory. What type

of t test would you use?

Normal t test Independent

samples t test

Dependent sample t test

One-sample t test 8 points QUESTION 8

1.

Which of the following states that if the sample is large enough, the central limit

theorem will apply even if the population is not normally distributed? Measures of central tendency

Law of large numbers

Sampling distribution

Random sampling QUESTION 9 8 points What is the coefficient of determination for r = .60? 1.

.

6

4

.

4

0

.

3

6

.

2

5 8 points QUESTION 10

1.

The interval level of measurement would include which of the following?

Gender Hair color

IQ score

Class rank 8 points QUESTION 11

1.

What percentage of the normal curve falls between one standard deviation above

and one standard deviation below the mean?

95.45% 99.73%

68.27%

55.12% QUESTION 12 8 points 1. If equal variances can be assumed, what is in the denominator of the formula

used?

Restricted variance estimate

Pooled variance estimate

n?1

Sum of squares QUESTION 13 1. 8 points What is the mean deviation for the following set of scores?

Scores = 4, 5, 6, 6, 7, 8, 8, 9, 10

1.5

3

4.5

6 8 points QUESTION 14

1.

The null and alternative hypotheses form a pair of logically opposite statements.

True

False QUESTION 15

1.

What is the first number in an ordered pair?

y-coordinate z-coordinate

x-coordinate 8 points f-coordinate 8 points QUESTION 16

1.

Which of the following is affected by sample size?

Measure of association Effect size

Significance level

Test statistic 8 points QUESTION 17

1.

When the score on the dependent variable may be predicted from the score on

the independent variable, what verbiage is typically used?

x is a function

of y y is a function

of z

y is a function

of x

z is a function

of y

8 points QUESTION 18

1.

Which among the following is similar to gamma but asymmetric?

Yule?s Q Pearson?s

C

Somer?s d

Gamma 8 points 1. QUESTION 19

In a recent poll, 257 randomly selected individuals were asked if doctor-assisted suicide

(DAS) should be legalized. What are the hypothesis and null hypothesis? Ho Position on DAS and gender are independent.

Ha Position on DAS and gender are dependent.

Ho Position on DAS and gender are dependent. Ha Position on DAS and gender are independent.

8 points QUESTION 20

1.

For a larger than 2 × 2 table, which of the following measures of association

should be used with nominal-by-nominal data?

Phi coefficient Yule?s Q

Gamma

Lambda 8 points QUESTION 21

1.

What is created when scores are listed from highest to lowest?

Ranking Category

Array

Median 8 points QUESTION 22

1.

If r = .96, what can be said about the relationship?

Small positive relationship Large inverse relationship

Small inverse relationship Large positive relationship 8 points QUESTION 23

1.

What must we calculate to make the statement that the sample mean falls

within +1.96 of the population mean?

Test of significance t test

Confidence interval

F test 8 points QUESTION 24

1.

What is another term often associated with Type I error?

Beta error Sigma error

Alpha error

Eta error 8 points QUESTION 25

1.

In the following causal model, which of the following statements is true? C and I are

concurrent.

C is subsequent to D.

C is intervening.

C is antecedent to

I.

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