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Exam 3 Practice (Ch. 1 - 9) Flashcards | StudBud
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Exam 3 Practice (Ch. 1 - 9)
Exam 3 Practice (Ch. 1 - 9)
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Questions
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Answers
1
Using the same problem, does it meet the required check?
No
Yes
2
Is this descriptive or inferential statistics?
Descriptive statistics
Inferential statistics
3
Make your decision.
Reject the null hypotesis.
Accept the null hypothesis.
Fail to reject the null hypothesis.
Do not reject the null hypothesis.
4
What type of test should you use?
1 - PropZTest
t Test
a blood test
Z Test
5
How many modes are there?
Two
None
One
Three
6
What type of sampling technique is being used?
Systematic
Cluster
Simple Random Sample
Stratified
7
Find the probability that
at most 20
of bald eagles survive their first year of life.
0.3507
0.7640
0.6493
0.2360
8
What is the confidence interval?
(3.585 , 8.065)
(3.585 , 8.415)
(3.935 , 8.065)
(4.325 , 9.317)
9
What type of interval are you constructing?
Z-Int
t-Int
Prop Z-Int
10
What is the test stat?
t = 3.118
t = -1.264
t = 1.264
t = -3.118
11
What is the p value?
p = 0.014
p = 3.321
p = 0.546
p = 0.004
12
Is the following Qualitative or Quantitative? Discrete or Continuous?
Quantitative; Continuous
Quantitative; Discrete
Qualitative; Discrete
Qualitative; Continuous
13
An unknown distribution has a mean of 90, a standard deviation of 15, and a sample size of 35.
.9964
0.3003
0.6997
.7606
14
Answer the following:
score of 92
score of 95
score of 86
score of 70
15
Using the same problem, does it meet the requirement check?
No
Yes
16
If the sample standard deviation is 9, what is the sample variance?
27
81
4.5
3
17
Chosen at random, what is the probability that the student was got a A
GIVEN
that the student was female?
4/49
4/23
4/9
28/49
18
A study of 20,000 U.S. men was conducted. The 20,000 men would be considered what?
Parameter
Sample
Statistic
Population
19
What is the alternative hypothesis for this same problem?
Ha < 6
Ha = 6
Ha > 6
