# (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. 