2. A rtest is used instead of a z test because a. the population standard deviat

Question

2. A rtest is used instead of a z test because a. the population standard deviation is known. b. the population mean is known. c. the population mean is unknown. d. the population size is unknown. e. the population variance is unknown. f. None of these 3. The claim about the population that we are trying to find evidence for is the a. P-value b. Level of significance c. Null hypothesis d. Alternate hypothesis e. None of these 4. The probability that we would get our observed result if the null hypothesis were true is the a. P-value b. Level of significance c. Null hypothesis d. Alternate hypothesis e. None of these A test is if we are interested only in deviations from the null in one direction. 5. a. Two-sided b. One-sided c. Significant d. Null e. None of these 6. A test is if we are interested in any deviation from the null a. Two-sided b. One-sided c. Significant d. Null e. None of these

Explanation / Answer

Ans:

2)When population variance is unknown,we use t test instead of z test.

Option e is correct.

3)Null hypothesis.

Option c is correct.

4)p-value

Option a is correct.

5)One-sided

Option b is correct.

6)Option a is correct.

Two-sided

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