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Statistics - Chapter 7 Review Hypothesis Testing Flashcards | StudBud
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Statistics - Chapter 7 Review Hypothesis Testing
Statistics - Chapter 7 Review Hypothesis Testing
21 terms
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#statistics #hypothesistest #null #alternative
Flashcards
21 cards
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Practice quiz
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Questions
21
Answers
1
If the claim is in H
a
and the decision is to reject H
0
, your interpretation should say:
enough evidence to reject the claim
not enough evidence to support the claim
enough evidence to support the claim
not enough evidence to reject the claim
2
Find the critical values z
0
and -z
0
for a two-tailed test with α = .05.
± 1.96
± 1.28
± 2.33
± 1.645
3
If you see H
a
: μ < 7, the hypothesis test is...
two-tailed
left-tailed
right-tailed
4
Find the critical X
2
-values to test the claim Ơ
2
= 4.3 if n = 12 and α = .05.
4.575, 19.675
2.603, 26.757
3.816, 21.920
3.053, 24.725
5
If the claim is in H
a
and the decision is to fail to reject H
0
, your interpretation should say:
not enough evidence to support the claim
enough evidence to reject the claim
not enough evidence to reject the claim
enough evidence to support the claim
6
If a school claims that 70% of its students play a sport, the hypothesis test is...
two-tailed
left-tailed
right-tailed
7
If you see H
0
: μ ≤ 4.2, the hypothesis test is...
two-tailed
right-tailed
left-tailed
8
Equality symbols must be placed in which hypothesis?
alternative
null
9
H
0
represents the...
alternative
hypotheses
null
variable
10
Inequality symbols must be placed in which hypothesis?
null
alternative
11
Compute the X
2
test statistic to test the claim Ơ
2
= 21.5 if n = 12, s
2
= 18, and α = .05.
12.961
9.209
18.490
.492
12
If the claim is in H
0
and the decision is to fail to reject H
0
, your interpretation should say:
not enough evidence to support the claim
enough evidence to reject the claim
not enough evidence to reject the claim
enough evidence to support the claim
13
H
a
represents the...
alternative
variable
null
hypotheses
14
If P = .003 and α = .01, what is your decision?
Support H0
Fail to reject H0
Fail to support H0
Reject H0
15
Find t for a sample with n = 10, x = 9.7, s = 1.3, and α = .05 if H
0
: μ ≥ 10.6.
-2.189
-3.010
-3.186
-2.617
16
What is the standardized test statistic if μ > 32, α = .05, n = 50, x = 32.3, and s = 1.2.
2.31
.98
1.77
3.11
17
Find the critical value z
0
to test the claim p = .250 given n = 48, p hat = .231, and α = .01.
± 1.645
± 1.96
± 2.575
± 2.33
18
If P = .07 and α = .05, what is your decision?
Fail to support H0
Support H0
Fail to reject H0
Reject H0
19
Find the critical value for a sample with n = 15 and α = .05 if H
0
: μ ≤ 20.
2.977
1.761
1.345
2.625
20
Find the critical value z
0
for a left-tailed test with α = .01.
-2.33
2.33
2.575
-2.575
21
If the claim is in the null and the decision is to reject H
0
, your interpretation should say:
not enough evidence to support the claim
not enough evidence to reject the claim
enough evidence to reject the claim
enough evidence to support the claim
