PSYC 355
Michelle Reed
LAB PROJECT PHASE 3
1.) INDEPENDENT-SAMPLE T TEST OUTPUT:
Group Statistics
ATTENDANCE_VARIANCE
Tot_Und
N
Mean
NOT OFTEN ATTEND
CHURCH
OFTEN ATTEND CHURCH
Std. Deviation
Std. Error Mean
18
37.7222
4.32238
1.01880
8
38.2500
3.53553
1.

1. I took a sample of the grade point averages for student in my class. For 25 students, the
standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the
sample was
A. 0.578.
B. 0.026.
C. 0.13.
Correct
Points Earned: 1/1
Y

1. Choose 50 engaged couples who have not been previously married. Interview the man and
woman separately about how their joint finances will be handled after marriage. Compare the
views of men and women. Which data design?
A. matched-pairs.
B. a single s

1. Government data show that 8% of adults are full-time college students and that 30% of adults
are age 55 or older.
Nonetheless, we can't conclude that, because (0.08)(0.30) = 0.024, about 2.4% of adults are
college students 55 or older.
Why not?
A. Beca

1. A professor is interested in how the 500 students in his class will rate today's lecture. He
selects the first 20 students on his class list, reads the names at the beginning of the lecture,
and asks them to go online to the course Web site and rate th

Students who have finished medical school are assigned to residencies in hospitals to receive
further training in a medical specialty. Here is part of a hypothetical database of students seeking
residency positions. USMLE is the students score on Step 1 o

. I want to examine the relationship between gas mileage of cars and the engine size
(displacement in cubic inches). The explanatory variable is
A. engine size.
B. gas mileage.
C. either engine size or gas mileage.
Incorrect
Points Earned: 0/1
Your Respon

It appears that people who are mildly obese are less active than leaner people.
One study looked at the average number of minutes per day that people spend standing or walking.
Among mildly obese people, minutes of activity varied according to the N(373,

1. In 2008, respondents to the General Social Survey were asked: There are always some people
whose ideas are considered bad or dangerous by other people. For instance, somebody who is
against churches and religion. If such a person wanted to make a speec

1. What is the slope of the regression line?
Answer
The slope is the coefficient before the x variable (D in this case). Thus the answer is 0.0138.
Points Earned: 1/1
Correct Answer: 0.0138
Your Response: 0.0138
2. Explain in specic language what this slo

1. Heres a new idea for treating advanced melanoma, the most serious kind of skin cancer.
Genetically engineer white blood cells to better recognize and destroy cancer cells, then infuse
these cells into patients. The subjects
in a small initial study of

1. Does X have a binomial distribution?
A. No, the calls are not independent.
B. No, the calls are independent, but each one has more than two possibilities.
C. Yes, the calls are independent, each one has two possibilities, and the probability of
reachin

The Millennial generation (so called because they were born after 1980 and began to come of age
around the year 2000) are less religiously active than older Americans. One of the questions in
the General Social Survey in 2008 was How often does the respon

The National Assessment of Educational Progress (NAEP) includes a mathematics test for high
school seniors.2 Scores on the test range from 0 to 300. Demonstrating the ability to use the
Pythagorean theorem to determine the length of a hypotenuse is an exa

1. From March 1981 to February 1983 the number of burglaries committed each month in a
Georgia town was recorded. They are given in the chart below. Between months 12 and 13 a
law was enacted requiring citizens to own a gun. Town officials felt this law m

1. Explain carefully what this means.
A. If you play 245 games, in 2 of them you will get four of a kind.
B. If you hold a pair and you open 245 cards, you will have 2 combinations of four of a kind.
C. If you have a pair in your hand, the probability tha

1. A researcher in early education believes that kindergarten-age children are more receptive to
help from a female teacher than from a male teacher. From the list of kindergarten teachers in
the state, the researcher randomly samples four classes in whic

PSYC 355
A linear regression analysis was conducted to determine whether scores from
questions about the Chrisitan doctrine predict Church attendance. The results
indicated a positive linear relationship between the variables, r (17) = .237, p = .
245 > .

PSYC 355
SPSS HOMEWORK 7:
CHI SQUARE
Part 1:
Green & Salkind: Lesson 40 Exercises 14
Method of cooking potato chips
Observed N
Expected N
Residual
Fried in animal fat
7
16.0
-9.0
Fried in Canola oil
33
16.0
17.0
8
16.0
-8.0
Baked
Total
48
Test Statistics

PSYC 355
SPSS HOMEWORK 5:
CORRELATION
Part 1:
Green & Salkind: Lesson 31 Exercises 1, 34
1. OUTPUT:
Descriptive Statistics
Mean
Overall quality as an
instructor
Overall course quality
Number of publications
Number of times cited by
other authors
Std. Devi

PSYC 355
SPSS HOMEWORK 8:
NONPARAMETRIC TESTS
Part 1:
1. Green & Salkind: Lesson 42, Exercises 1, 34
The following helpful tips are numbered to correspond with the exercise number to which
they refer:
1.
Ranks
weight
Time in Seconds
N
Mean Rank
Sum of Ran

PSYC 355
MICHELLE REED
SPSS HOMEWORK 6:
PREDICTION BIVARIATE LINEAR REGRESSION
Part 1:
Green & Salkind: Lesson 33 Exercises 1, 34
Descriptive Statistics
Mean
Number of times hit by a
peer
Number of times hit by a
bobo
Std. Deviation
N
11.60
20.095
10
4.90

PSYC 355
SPSS HOMEWORK 2
INDEPENDENT-SAMPLES T-TESTS
Part 1:
Green & Salkind: Lesson 24 Exercises 15
The following helpful tips are numbered to correspond with the exercise number to which they
refer:
1. Type the t and p values out underneath your copied

PSYC 355
MICHELLE REED
SPSS HOMEWORK 1 INSTRUCTIONS:
SINGLE-SAMPLE T-TESTS AND PAIRED-SAMPLES T-TESTS
Part 1:
1. Single-Sample t-Test
One-Sample Statistics
N
Tot_Score
Mean
6
Std. Deviation
6.0000
Std. Error Mean
1.41421
.57735
One-Sample Test
Test Value

1. A 1993 survey conducted by the local paper in Columbus, Ohio, one week before Election Day,
asked voters who they would vote for City Attorney. The goal was to predict the outcome of the
upcoming election. Thirty-seven percent said they would vote for

1. I select two cards from a deck of fifty-two cards and observe the color of each (twenty-six
cards in the deck are red and twenty-six are black). Which of the following is an appropriate
sample space S for the possible outcomes?
A. S = cfw_red, black
B.

The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students
study habits and attitude toward school. Scores range from 0 to 200. The mean score for college
students is about 115, and the standard deviation is about 30. A

1. A sociologist wants to study the attitudes of American male college students toward
marriage and husband-wife relations. She gives a questionnaire to twenty-five of the men
enrolled in Sociology 101 at her college. All twenty-five complete and return t

2
Discrete Random Variables
2.1
Random Variables
A random variable is a real-valued function on a sample space1 . A random variable generally
is a quantity we wish to measure; the output of the random variable depends on which
element of the sample space