Jessika, Jenna and Lauren conducted a “tea test” comparing expensive loose leaf tea to some cheap dollar store

tea. Ten people scored the loose leaf tea: 6, 1, 6, 4, 1, 6, 8, 5, 3, 7. Those same 10 people scored the cheap tea: 8, 8, 4, 6, 4, 8, 4, 3, 7, 3. Conduct a t-test to determine whether there is a statistically significant difference between the two teas. Use the .05 significance level. What is the right-tail critical value for this two-tailed test? (Answer with only three decimal places, like this: 5.555) ____

Jessika, Jenna and Lauren conducted a “tea test” comparing expensive loose leaf tea to some cheap dollar store tea. Ten people scored the loose leaf tea: 6, 1, 6, 4, 1, 6, 8, 5, 3, 7. Those same 10 people scored the cheap tea: 8, 8, 4, 6, 4, 8, 4, 3, 7, 3. Conduct a t-test to determine whether there is a statistically significant difference between the two teas. Use the .05 significance level. What is your decision regarding the null hypothesis?

Fail to reject the null hypothesis because p = .05. There is a small statistically significant difference between the two teas.

Reject the null hypothesis because p < .05. There is a statistically significant difference between the two teas as expected.

Fail to reject the null hypothesis because p > .05. There is a statistically significant difference between the two teas.

Fail to reject the null hypothesis because p < .05. There is no statistically significant difference between the two teas.

Reject the null hypothesis because p > .05. There is no statistically significant difference between the two teas.

Fail to reject the null hypothesis because p > .05. There is no statistically significant difference between the two teas.

None of the above

Jessika, Jenna and Lauren conducted a “tea test” comparing expensive loose leaf tea to some cheap dollar store tea. Ten people scored the loose leaf tea: 6, 1, 6, 4, 1, 6, 8, 5, 3, 7. Those same 10 people scored the cheap tea: 8, 8, 4, 6, 4, 8, 4, 3, 7, 3. Conduct a paired t-test to determine whether there is a statistically significant difference between the two teas. Use the .05 significance level. What is the p-value for this two-tailed test? (Answer with only three decimal places, like this: 5.555) ____

On a paired t-test, which hypothesis states there is no difference between the mean difference weights of different brands of cookies and zero?

null hypothesis

alternate hypothesis

research hypothesis

decision rule

critical hypothesis

Over a 4 day period police officer Ali gave the following number of traffic tickets: 24, 22, 26, 18. During the same 4-day period officer JT gave the following number of tickets: 25, 18, 19, 15. Conduct a paired t-test to determine if there is a statistically significant difference at the .05 significance level. What is the decision rule?

Reject H0 if t > 2.78 or if t < -2.78

Reject H0 if t > 1.96 or if t < -1.96

Reject H0 if t > -1.96 or if t < 1.96

Reject H0 if t > 2.35 or if t < -2.35

Reject H0 if t > 3.18 or if t < -3.18

Reject H0 if t < 3.18 or if t > -3.18

None of the above

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