Do people walk faster in an airport when they are departing (getting on a plane) or after they have arrived (getting off a plane)? An interested passenger watched a random sample of people departing and a random sample of people arriving and measured the walking speed (in feet per minute) of each. Which of the following tests is the most appropriate to use to determine if the mean walking speed is different between departing and arriving passengers at an airport (assuming all conditions for inference are satisfied)? Use the following set of data for the next four problems, assume that both populations are normally distributed. Population 1 Population 2 n 19 19 x¯ 15.2 11.9 s 4.1 3.7 Test whether μ1≠μ2 at the α=0.01 significance level for the sample data. Determine the null and the alternative hypothesis for this test. Determine the P-value for this hypothesis test. Should the null hypothesis be rejected?
Do people walk faster in an airport when they are departing (getting on a plane) or after they have arrived (getting off a plane)? An interested passenger watched a random sample of people departing and a random sample of people arriving and measured the walking speed (in feet per minute) of each. Which of the following tests is the most appropriate to use to determine if the mean walking speed is different between departing and arriving passengers at an airport (assuming all conditions for inference are satisfied)?
Use the following set of data for the next four problems, assume that both populations are
|
|
Population 1 |
Population 2 |
|
n |
19 |
19 |
|
x¯ |
15.2 |
11.9 |
|
s |
4.1 |
3.7 |
Test whether μ1≠μ2 at the α=0.01 significance level for the sample data. Determine the null and the alternative hypothesis for this test.
Determine the P-value for this hypothesis test.
Should the null hypothesis be rejected?
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