79 81 81 83 86 87 Round your answers to the nearest tenth of a phone unlock. A spreadsheet with the data can be copied from here.Links to an external site. 1) Use the information provided to construct a 95% confidence interval estimate of the average number of times that students unlock their phones each day.
The number of times that a group of randomly selected students at a school, unlock their phones per day was recorded. These results are listed in the table below.
| 55 | 60 | 63 | 63 | 66 |
| 68 | 68 | 73 | 74 | 75 |
| 75 | 78 | 79 | 81 | 81 |
| 83 | 86 | 87 |
Round your answers to the nearest tenth of a phone unlock.
A spreadsheet with the data can be copied from here.Links to an external site.
1) Use the information provided to construct a 95% confidence
a) the margin of error, b) the critical number used, and c) the parameter being estimated (p or ).
2) Apple recently reported that the average iPhone user unlocks their phone 80 times per day. Does the evidence suggest, at this level of confidence, that the average number may be less for students at Cañada College?
You must use the interval estimate in your answer. No yes or no answer.
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