Question

You love the new elliptical machines your gym added several months ago, but because they are so popular with other members too, you usually have to wait for a machine to become available. Out of curiosity, each day you write down how many minutes you have to wait for an elliptical machine. Using a confidence level of 80%, is the average wait time for an elliptical machine less than 5 minutes?

2 |
0 |
5 |
7 |
5 |
8 |
5 |
5 |

10 |
5 |
2 |
0 |
2 |
4 |
0 |
4 |

0 |
7 |
3 |
5 |
8 |
2 |
5 |
10 |

7 |
0 |
6 |
4 |
4 |
4 |
8 |
3 |

Is this a left-tailed, right-tailed, or two-tailed test?

Answer #1

Here we have asked to find the average wait time for an elliptical machine less than 5 minutes.

That is < 5

Hence we can say that this is left tail test.

Hope this will help you. Thank you :)

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B
C
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1
0
0
1
0
1
2
1
0
0
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1
3
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1
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1
4
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1
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1
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0
-25
1
-16
2
-8
3
1
4
9
5
14
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5
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4
OK
3
Fair
2
Poor
1
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