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Math Review
Math Review
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1
If α=0.1, what is the confidence level?
10%
90%
99%
95%
2
It is a proposed explanation or assumption about a population parameter.
Statistics
Hypothesis
Decision
Probability
3
Which of the following describes an alternative hypothesis in a left-tailed test?
_{H_1:μ<100}
_{H_1:μ\ne100}
H_1:μ=100
_{H_1:μ>100}
4
It is a decision-making process for evaluating claims about the population parameter.
Experimental Testing
Simple Analysis
Analytical Testing
Hypothesis Testing
5
Which of the following separates the critical region from non-critical region?
rejection region
acceptance region
level of significance
critical value
6
When do we use the z-test?
if the sample size is greater than or equal to 30
if the sample size is less than 30
if the sample size is less than the population mean
if the population mean is equal to the sample size
7
It is the probability of committing an incorrect decision about the null hypothesis.
Level of error
Level of Significance
Level of Acceptance
Confidence Level
8
Please read the question below:
H_1:μ<3.9
H_1:μ=3.9
H_1:μ>3.9
H_1:μ\ne3.9
9
Please read the question below.
60
20
0
19
10
If the sample size is small such that n<30, which test statistic is appropriate?
two-tailed test
t-test
one-tailed test
z-test
