The confidence interval for the mean population is 2.5121 < mu < 2.6879.

Clifland 2020-12-15 Answered
The confidence interval for the mean population is 2.5121<μ<2.6879.
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odgovoreh
Answered 2020-12-16 Author has 107 answers
Given:
The total size of the sample of the students is 224 . The meanof the athelatic event participation is 2.6 and the standard deviation is 0.8
Obtain the z- value from the z-table of 90% confidence corresponding to the given mean and standard deviation is 1.645.
The confidence interval for the mean population is calculated as,
C=x^±z×sn
=2.6±(1.645)0.8224
=2.6±0.0879
=2.5121,2.6879
Thus, the confidence interval for the mean population is 2.5121μ2.6879.
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