Question

An independent-measures research study uses two samples, each with n = 8 participants. If the data produce a t statistic of t = 2.50, then which of the following is the correct decision for a two-tailed hypothesis test? Group of answer choices Reject the null hypothesis with a = .05 but fail to reject with a = .01. cannot answer without additional information Reject the null hypothesis with either a = .05 or a = .01. Fail to reject the null hypothesis with either a = .05 or a = .01.

Answer #1

TOPIC:Testing of hypothesis.

An independent-measures research study uses two samples, a total
of 23 participants in both samples combined. If the data produce a
t statistic of t = 2.10, then which of the following is the correct
decision for a two-tailed hypothesis test?
Cannot answer without additional information
Reject the null hypothesis with a = .05 but fail to reject with
a = .01.
Reject the null hypothesis with either a = .05 or a = .01.
Fail to reject the null...

1. Which of the following sets of data provides the clearest
difference between the two samples?
One sample has M = 20 with s2 = 5 and the other has M = 30 with
s2 = 5.
One sample has M = 20 with s2 = 5 and the other has M = 25 with
s2 = 5.
One sample has M = 20 with s2 = 10 and the other has M = 30 with
s2 = 10.
One...

1.- A researcher obtains t = 2.25 for a
repeated-measures study using a sample of n = 10
participants. Based on this t value, what is the correct
decision for a two-tailed test?
a.
Reject the null hypothesis with α = .05 but not with
α = .01
b.
Reject the null hypothesis with both α = .05 and
α = .01
c.
Fail to reject the null hypothesis with both α = .05
and α = .01
d.
Cannot...

Two samples, each with n = 10, produced an independent sample t
statistic of t = -2.97. Which of the following the correct
decisions for a two-tailed test?
A. Fail to reject H0 with α= .05 but reject
H0 with α= .01.
B. Fail to reject H0 with both, α= .05 and
α= .01.
C. Reject H0 with both, α= .05 and
α= .01.
D. Reject H0 with α= .05 but fail to reject
with α= .01.

1. A one-factor ANOVA for independent samples conducted on 4
experimental groups, with n = 8 participants in each group,
produces the following partial outcomes: SSbetween = 36, SSwithin =
84. For this analysis, what is the computed F statistic?
A. F = 3
B. F = 12
C. F = 8
D. F = 6
E. F = 21
F. F = 4
2. A researcher reports an outcome of one factor ANOVA for
independent samples as F(2, 36)...

1a
The following data were obtained from an independent-measures
research study comparing three treatment conditions.
I
II
III
2
5
7
5
2
3
0
1
6
1
2
4
2
2
T =12
T =10
T =20
G = 42
SS =14
SS =9
SS =10
ΣX2= 182
Use an ANOVA with α = .05 to determine whether there are any
significant mean differences among the treatments.
The null hypothesis in words is
Group of answer choices
a. There...

6. In one-factor AOVA, which of the following is expected If
there is no significant effect of experimental treatments?
A. SSbetween should be about the same size as SStotal
B. MSwithin should be greater than MSbetween
C. MSbetween should be about the same size as MSwithin
D. MSbetween should be greater than MSwithin
7. In one-factor AOVA, which of the following is expected If
there is some significant effect of experimental treatments?
A. SSwithin should be greater than MSbetween
B....

Describe an imaginary research study where it would be
appropriate to use an independent-measures design that could be
analyzed using a t hypothesis test. What are the two sets of data
to be compared? What are the null & alternative hypotheses?

Four students reported their study time and test score from a
statistics course and their data have been converted into Z scores
in the table below. What is Pearson's correlation coefficient from
this data set?
Group of answer choices
a.)-.50
b.)-.25
c.).75
d.)-1.00
In what situation would a researcher use
a t-test used instead of a Z-test?
Group of answer choices
a.)When there is only one sample.
b.)When the population standard deviation is unknown.
c.)When the sample size is smaller than...

A two-tailed hypothesis test is being used to evaluate a
treatment effect with α = .05. If the sample data produce a z-score
statistic of z = -1.24, then what is the correct decision?
Reject the null hypothesis and conclude that the treatment has
no effect.
Reject the null hypothesis and conclude that the treatment has
an effect.
Fail to reject the null hypothesis and conclude that the
treatment has an effect.
Fail to reject the null hypothesis and conclude...

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