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fomenos
1 year ago
12

What would happen if someone sampled a football team to find the average

Mathematics
1 answer:
Kisachek [45]1 year ago
5 0
The results would give a higher average than it should. Reason being is that football players on average are heavier than others due to the demand of the sport.
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Answer:

The 95% confidence interval for mean tire life is between 52,368.4 kilometers and 67,911 kilometers.

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We are in posession of the sample's standard deviation, so we use the students t-distribution to solve this question.

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95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 15 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.68

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The upper end of the interval is the sample mean added to M. So it is 60139.7 + 7771.3 = 67,911.

The 95% confidence interval for mean tire life is between 52,368.4 kilometers and 67,911 kilometers.

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