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Review COT Flashcards | StudBud

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Review COT

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Questions 7

Answers

1
Which of the following would be an appropriate null hypothesis?
The mean of a sample is equal to 75.
The mean of a population is greater than 75.
The mean of a sample is not equal to 75.
The mean of a population is equal to 75.
2
When is a Type I error committed?
We reject a null hypothesis that is true.
We fail to reject a null hypothesis that is false
We reject a null hypothesis that is false.
We fail to reject a null hypothesis that is true.
3
When is a Type II error committed?
We fail to reject a null hypothesis that is true.
We fail to reject a null hypothesis that is false.
We reject a null hypothesis that is false.
We reject a null hypothesis that is true.
4
Which of the following would be an appropriate alternative hypothesis for one-tailed test?
𝐻𝑎 ≥ 100
𝐻𝑎 ≤ 100
𝐻𝑎 < 100
𝐻𝑎 = 100
5
A proposed explanation, assertion, or assumption about a population parameter or the distribution of a random variable.
Hypothesis
Decision
Probability
Statistics
6
Which of the following describes an alternative hypothesis in a left-tailedtailed test
𝐻𝑎 > 100
𝐻𝑎 ≠ 100
𝐻𝑎 = 100
𝐻𝑎 < 100
7
Which of the following is a Type I error?
𝐻0 is false; reject 𝐻0.
𝐻0 is true; reject 𝐻0.
𝐻0 is true; fail to reject 𝐻0.
𝐻0 is false; fail to reject 𝐻0.