SPSS output produces a p-value associated with the test statistic. If it is smaller than your chosen alpha level (typically 0.05), you ________ the null hypothesis.

Group of answer choices

fail to reject

test

accept

reject

Flag question: Question 2Question 22.5 pts

The top number provided in output produced by SPSS for the Pearson correlations analysis is:

Group of answer choices

the two-tailed p-value

the correlation coefficient

sample size (N)

degrees of freedom

Flag question: Question 3Question 32.5 pts

Which of the following correlation coefficients is the strongest?

Group of answer choices

0.03

-0.51

-0.94

0.83

Flag question: Question 4Question 42.5 pts

If an agency has a mean rating of 3.7(based on 30 ratings), and they know both the regional mean AND standard deviation, whichtest would be most appropriate to see if they are similar to others in the region?

Group of answer choices

single sample t test

z test

pearson's r correlation

regression

Flag question: Question 5Question 52.5 pts

If examining the relationship between academic rank and ranked attractiveness, which statistical test would be most appropriate?

Group of answer choices

Point biserial correlation

Pearson's r correlation

Spearman correlation

Paired samples t-test

Flag question: Question 6Question 62.5 pts

If a researcher concludes that cereal color has no effect on amount consumed but the researcher was wrong in this conclusion, which of the following best represents his decision?

Group of answer choices

correct decision

Type I error

Type II error

Type III error

Flag question: Question 7Question 72.5 pts

If a researcher concludes that worker productivity significantly increased when playing upbeat music but in fact, worker productivity does NOT increase when playing upbeat music, which of the following best represents her decision?

Group of answer choices

correct decision

Type III error

Type II error

Type I error

Flag question: Question 8Question 82.5 pts

Calculate the coefficient of determination given that N=17, r = 0.14, and p = .67

Group of answer choices

0.0289

0.0196

0.4489

0.14

Flag question: Question 9Question 92.5 pts

If a researcher's alternative hypothesis is that brighter colors increases productivity, which of the following statements is true about the hypothesis?

Group of answer choices

one-tailed; directional

two-tailed; directional

one-tailed; nondirectional

two-tailed; directional

Flag question: Question 10Question 102.5 pts

If data are interval/ratio and the population is normally distributed, the data is most likely:

Group of answer choices

nominal

skewed

parametric

nonparametric

Flag question: Question 11Question 112.5 pts

If conducting a correlation, which graph is most appropriate?

Group of answer choices

histogram

scatterplot

line graph

pie chart

Flag question: Question 12Question 122.5 pts

The alpha level used most commonly in the social sciences (and always in this class) is:

Group of answer choices

0.01

0.05

0.95

0.50

Flag question: Question 13Question 132.5 pts

In a study with 25 participants and s = 15, the estimated standard error of the mean(as you'd need to solve before conducting a t test) would be

Group of answer choices

0.6.

3.0.

2.0.

2.6.

Flag question: Question 14Question 142.5 pts

What is the probability of rolling a two-digit number in a single roll of a die?

Group of answer choices

0

1.0

0.50

0.25

Flag question: Question 15Question 152.5 pts

Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of selecting a student whose score is 600 or higher on the test?

Group of answer choices

.34

.31

.16

.43

Flag question: Question 16Question 162.5 pts

The standard deviation of the sampling distribution is called the

Group of answer choices

standard deviation.

deviation of the sample.

standard error of the mean.

standard error of the population.

Flag question: Question 17Question 172.5 pts

To estimate the standard deviation of the sampling distribution when using a single-sample t test, we use the

Group of answer choices

estimated standard deviation.

estimated population standard deviation.

estimated standard error of the mean.

true standard error of the mean.

Flag question: Question 18Question 182.5 pts

What is the probability of a couple having three children in the following order: girl, girl, girl?

Group of answer choices

0.0625

0.125

0.25

0.50

Flag question: Question 19Question 192.5 pts

_____ is a procedure which allows us to predict an individual's score on one variable based on knowing one or more other variables.

Group of answer choices

Pearson product-moment correlation coefficient

Coefficient of determination

Regression analyses

Point-biserial correlation coefficient

Flag question: Question 20Question 202.5 pts

In a study on the effects of amount of sleep on driving performance, researchers predict that those in the group that is allowed more sleep will exhibit better driving performance. The researchers are using a _____ hypothesis.

Group of answer choices

two-tailed

directional

one-tailed

one-tailed and directional

Flag question: Question 21Question 212.5 pts

A _____-tailed test and a _____ sample size will both increase the power of the test.

Group of answer choices

two; larger

one; larger

two; smaller

one; smaller

Flag question: Question 22Question 222.5 pts

Given that on one section of the SAT the mean is 500 and the standard deviation is 100, which of the following best depicts how to solve forthe approximate probability of selecting a student whose score is 300 or lower followed by selecting a student whose score is 700 or higher on the test?

Group of answer choices

.02275 x .02275

.02275 + .02275

.47725 x .02275

.47725 + .02275

Flag question: Question 23Question 232.5 pts

A false alarm is to a(n) _____ as a miss is to a(n) _____.

Group of answer choices

Type I error; Type II error

Type II error; Type I error

null hypothesis; alternative hypothesis

alternative hypothesis; null hypothesis

Flag question: Question 24Question 242.5 pts

In order to increase the power of z test, one might

Group of answer choices

increase sample size.

use a two-tailed test.

decrease sample size.

none of the options is correct

Flag question: Question 25Question 252.5 pts

Per the text, we would expect the correlation between smoking and lung cancer to be _____ whereas we would expect the correlation between mountain elevation and temperature to be _____.

Group of answer choices

curvilinear; negative

positive; negative

negative; positive

positive; curvilinear

Flag question: Question 26Question 262.5 pts

In a recent study, researchers concluded that exercise significantly lowered stress levels. What the researchers were unaware of, however, was that several of the participants in the exercise group were also taking anti-anxiety medications. The researchers' conclusion is a(n) _____ error.

Group of answer choices

Type II

Type I

null hypothesis

alternative hypothesis

Flag question: Question 27Question 272.5 pts

The _____ distribution is a set of distributions that, although symmetrical and bell-shaped, are not normally distributed.

Group of answer choices

standard normal

normal

Student's t

alternative

Flag question: Question 28Question 282.5 pts

An indication of the strength of the relationship between two variables is the _____.

Group of answer choices

slope

sign

scatterplot

magnitude

Flag question: Question 29Question 292.5 pts

What is the probability of drawing either a club or a spade from a standard (52-card) deck of playing cards?

Group of answer choices

0.25

0.50

0.75

1.0

Flag question: Question 30Question 302.5 pts

Given that on one section of the SAT the mean is500and the standard deviation is100,which of the following best depicts how to solve forthe approximate probability of a student scoring 300 or lower OR700 or higher on the test?

Group of answer choices

.02275+.97725

.02275x.97725

.02275+.02275

.02275x.02275

Flag question: Question 31Question 312.5 pts

Questions that ask for basic information such as age, gender, ethnicity, or income are called _____ questions and should be placed at the _____ of a survey.

Group of answer choices

demographic; end

demographic; beginning

double-barreled; end

double-barreled; beginning

Flag question: Question 32Question 322.5 pts

Calculate Susan's z score if she scored a 77% on an exam that has a mean of 85% and a standard deviation of 10.

Group of answer choices

-0.77

0.80

0.77

-0.80

Flag question: Question 33Question 332.5 pts

If Lane had a z score of (NEGATIVE) -1.41, what percent of people scored HIGHER than her?

Group of answer choices

7.926%

42.074%

57.926%

92.074%

Flag question: Question 34Question 342.5 pts

Researchers often prefer _____ observation because it increases _____ validity.

Group of answer choices

laboratory; construct

laboratory; ecological

naturalistic; ecological

naturalistic; content

Flag question: Question 35Question 352.5 pts

A graphical representation of a frequency distribution in which vertical bars are centered above each category along the x-axis and are separated from each other by a space is a _____.

Group of answer choices

histogram

bar graph

pie graph

frequency polygon

Flag question: Question 36Question 362.5 pts

A psychologist from the _____ research area might study brain organization or the chemical messengers used in the nervous system.

Group of answer choices

cognition

social psychology

psychobiology

human development

Flag question: Question 37Question 372.5 pts

_____ allows you to research by topic whereas _____ allows you to work from a given article.

Group of answer choices

The SSCI; the SCI

The SSCI; PsycINFO

PsycINFO; the SSCI

ERIC; the SCI

Flag question: Question 38Question 382.5 pts

Which of the following represents data arranged on an interval-ratio scale?

Group of answer choices

ranking of contestants in a beauty contest

reaction time in seconds to complete a task

categorizing subjects according to their gender

letter grade on an exam

Flag question: Question 39Question 392.5 pts

You type in data into SPSS using the:

Group of answer choices

Data Editor

Statistics Viewer

Help Box

Variable View

Flag question: Question 40Question 402.5 pts

Gaining knowledge via science involves using _____ and _____.

Group of answer choices

empiricism; intuition

tenacity; authority

intuition; logical reasoning

empiricism; rationalism