TESTING HYPOTHESIS
QuizΒ by Vincent Villasante
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- Q1
It is a proposed explanation, assertion, or assumption about a population parameter or about the distribution of a random variable
Statistics
Decision
Probability
Hypothesis
60s - Q2
It is also the probability of committing an incorrect decision about the null hypothesis.
Level of significance
Level of error
Level of acceptance
Level of hypothesis
60s - Q3
Which of the following describes an alternative hypothesis using a two-tailed test?
π»π= 100
π»πβ 100
π»π< 100
π»π > 100
60s - Q4
In a one-tailed test, in which the critical value listed below will the computed z of 2.313 fall in the acceptance region?
1.383
1.533
2.365
2.228
60s - Q5
When is a Type I error committed?
We fail to reject a null hypothesis that is false.
We reject a null hypothesis that is true
We reject a null hypothesis that is false
We fail to reject a null hypothesis that is true
60s - Q6
If the computed z-value is 1.915 and the critical value is 1.812, which of the following statements could be true?
. It lies in the non-rejection region, π»π must be rejected.
It lies in the non-rejection region, hence we fail to rejectπ»π
It lies in the rejection region, hence we fail to reject π»π
It lies in the rejection region, π»π must be rejected.
60s - Q7
Using a left-tailed test, which of the following value of z will not fall in the rejection region where the critical value is β 1.638?
β 1.637
β 1.641
β 1.639
β 1.706
60s - Q8
When is a Type II error committed?
fail to reject a null hypothesis that is false
fail to reject a null hypothesis that is true
reject a null hypothesis that is false
reject a null hypothesis that is true.
60s - Q9
Which of the following describes an alternative hypothesis using two-tailed test?
π»π : π = 50 π¦ππππ πππ
π»π: π > 50 π¦ππππ πππ
π»π: π β 50 π¦ππππ πππ
π»π: π < 50 π¦ππππ πππ
60s - Q10
Which of the following must be used as the significance level if we want a lower possibility of correct decision?
2%
1%
10%
5%
60s