Struggling a little bit with these questions. 1. To construct a 95% confidence i

Question

Struggling a little bit with these questions.

1. To construct a 95% confidence interval with a sample size of 15, the correct t* to use is

Question 5 options:

2.145

1.761

1.645

2. When performing a one-sample t-test, if the sample size is 14, then __________ degrees of freedom should be used for determining the confidence interval from the t-table.

Question 4 options:

1

13

14

15

3. Perform a one-sample t-test with the following information:

H0: µ = 100, n = 9, xbar = 107, s = 6

Should you reject the null hypothesis at the 0.05 significance level?

Question 7 options:

True

False

2.145

1.761

1.645

2. When performing a one-sample t-test, if the sample size is 14, then __________ degrees of freedom should be used for determining the confidence interval from the t-table.

Question 4 options:

1

13

14

15

3. Perform a one-sample t-test with the following information:

H0: µ = 100, n = 9, xbar = 107, s = 6

Should you reject the null hypothesis at the 0.05 significance level?

Question 7 options:

True

False

Explanation / Answer

Solution :-

1. option A. 2.145

=> n = 15, df = 15-1 = 4 ,

2. option B. 13

=> n = 14, df = 14-1 = 13

3. option A. True

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