Posted: April 5th, 2021

Which of the following tests analyzes the difference between the means of two independent samples?

correlated t test

t test for independent groups

sign test

test of variance

If its assumptions are met, the analysis of variance technique is appropriate when ____.

two or more factors are varied

several levels of a single independent variable are compared

three or more groups are involved

all of the other three options

sB2 is a measure of ____.

s 2 alone

s 2 + the effects of the independent variable

the variability between the means

s 2 + the effects of the independent variable and the variability between the means

If X1 = 46, X2 = 50, X3 = 92 and n1 = n2 = n3, what is the value of Xg?

cannot be determined from information given

50.0

188.0

62.67

The sampling distribution of chi-square is ____.

skewed

varies with df

is a theoretical distribution

all of the other three options

A contingency table ____.

is a two-way table

involves two variables

involves two mutually exclusive variables

is a two-way table and involves two variables

If N = 18 and a = 0.052 tailed, the value of Tcrit is ____.

40

±39

-41

47

Prior to a recent gubernatorial election, a survey was conducted to determine whether there was a relationship between sexual gender and preference for the Democratic or Republican candidate. The following data were recorded.

(Republican first column) (democrat second column)

Female: 82 | 118

Male: 68 | 132

Refer to Exhibit 17-1. Using a = 0.05, what is your conclusion?

accept H0; there is no relationship between sex and candidate preference

reject H0; there is a significant relationship between sex and candidate preference

retain H0; the study does not show a significant relationship between sex and candidate preference

retain H0; this study shows a significant relationship between sex and candidate preference

Place an order in 3 easy steps. Takes less than 5 mins.