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AP Statistics Inference Basics Flashcards | StudBud
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AP Statistics Inference Basics
AP Statistics Inference Basics
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Review for Inference Test
Flashcards
19 cards
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Questions
19
Answers
1
Which is the appropriate conclusion for the end of a hypothesis test?
Red
Blue
2
True or False: P-value represents the probability that the H0 is true.
False
True
3
z
test
= 2.10, what is the p-value?
.9821
Cannot be determined with the given information.
.0358
.0179
4
What is the probability of a t-statistics with 19 df being > 2.539? (Use Table)
< 0.005
.01
.02
5
Which is the appropriate interpretation of p-value?
Red
Blue
6
When should you include degrees of freedom in hypothesis tests and confidence intervals?
t-procedures only
Both z- and t- procedures
z-procedures only
t- and chi-square procedures
7
Which type of test/interval uses n
1
p-hat
1
& n
2
p-hat
2
... to check "nearly normal?"
2 sample z test for 2 ρ's
1 sample z test for ρ
2 sample z interval for 2 ρ's
1 sample z interval for ρ
8
Which symbol should NOT be used in the H
0
and H
a
?
ρ
p-hat
x-bar
μ
9
Which type of test/interval uses np-hat and nq-hat to check "nearly normal?"
1 sample z interval for ρ
2 sample z interval for 2 ρ's
2 sample z test for 2 ρ's
1 sample z test for ρ
10
When do you use the central limit theorem?
Any time you check conditions.
When determining if a distribution of sample means is ~N.
When determining if a distribution of sample props is ~N.
11
Sample Mean
x¯
ρ
p^
μ
12
What should you NOT include when constructing and interpreting a confidence interval?
Conditions
Hypotheses
Parameter
Confidence Level
13
Population Proportion
ρ
p^
x¯
μ
14
What is the TABLE critical value for a 1-sample 90% t-interval with n=40?
1.697
1.684
1.676
1.645
15
Which is the appropriate interpretation of confidence
level
?
Blue
Red
16
Which type of test/interval uses given pop or CLT or a graph to check "nearly normal?"
2 sample t interval for 2μ
1 sample t test for μ
1 sample t interval for μ
2 sample t test for 2μ
17
A 90% confidence interval is ____________ than a 95% confidence interval from the same data.
wider
less wide
the same width
*can't answer, depends on sample size (n)
18
Which type of test/interval uses n
1
p-hat & n
1
(1-p-hat) to check "nearly normal?"
1 sample z interval for ρ
2 sample z test for 2 ρ's
1 sample z test for ρ
2 sample z interval for 2 ρ's
19
Which type of test/interval uses np
0
and n(1-p
o
) to check "nearly normal?"
1 sample z test for ρ
2 sample z test for 2 ρ's
2 sample z interval for 2 ρ's
1 sample z interval for ρ
