Do people walk faster in the airport when they are departing (getting on a plane

Question

Do people walk faster in the airport when they are departing (getting on a plane) or do they walk faster w they are arriving (getting off a plane)? A reputable researcher measured the walking speed of random travelers in two International Airports. His findings are summarized in the table. Determine whether the speeds were different at the = 0.06 level of significance. Direction of Travel Mean speed (feet per minute) Standard deviation(feet per minute) Departure Arrival 272 ample size 1. What is the test function in calculators? 53 40 50 5. What is the test statistics? a. Z - test b. T -test c. 1 - PropZTest d. 2 - PropZTest e. 2- SampTTest a. -2.0651 b. -2.0851 c. -2.0751 d. -2.0951 6. What is the p-value? a. 0.0512 b. 0.0112 c. 0.0312 d. 0.0412 What should we do? a. Reject the Ho b. Cannot reject the Ho c. Reject the H1 d. Accept the Ho How to conclude? a. Evidence is found, so H, is correct. b. Evidence is found, so H, is incorrect c. Evidence is not found, so Hi is correct d. Evidence is not found, so H, is incorrect 2. What is testing? a. b. c. 7. 3. Two tailed, Right-tailed, or Left-tailed? a. Two-tailed b. Right-tailed c. Left-tailed 8. What is the critical value? a. -2.0158 b. -1.9158 c. -1.8158 d.-1.7158 4. children were randomly divided into two groups In randomized, double-blind clinical trials of a new vaccine, Subjects in group 1 received the new vaccine while subjects in group 2 received a co second dose, 136 of 451 subjects in the experimental group (group 1) experienced drowsiness as a After the second dose, 41 of 106 of the subjects in the control group (group 2) side effect. Does the evidence suggest that a different proportion of subjects in group 1 ex drowsiness as a side effect than subjects in group 2 at the 0.02 level ofsign confidence interval for the difference. 9. What is the Confidence Interval? control vaccine. After the experienced drowsiness as a perienced ficance. Construct a 92% Tl3awbatistheteststatistics? -26960 a. (-0.1763,-0.0058) b. b. -2.1960 c. -1.6960 d. -1.1960 (0.0058,0.1763) c. (0.0058,0.1763) 14. What is the p-value? d. (-0.1763,0.0058) a. 0,0899 b. 0.0599 10. What is testing? a, b. p c. c. 0.0299

Explanation / Answer

A. E. 2 sample t test

Two samples

B. A. Mu

C. A. Two tailed test

As it is for equality

D. B

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