Mathematics, 04.08.2020 22:01 livleluve76
The mouse weights (in grams) of a random sample of 100 mice involved in a nutrition experiment are: Interval 41.543.5 43.545.5 45.547.5 47.549.5 49.551.5 51.553.5 53.555.5 55.5 57.5 57.559.5 Frequency Interval 3 7 13 24 15 16 13 7 2Required:a. Find the mean of the weight of the mice. (Round to two decimal places.)b. Find the standard deviation of the weight of the mice. (Round to two decimal places.)
Answers: 2
![s=\frac{1}{\sum f_{i}-1}[\sum f_{i}x_{i}^{2}-\frac{1}{\sum f_{i}}(\sum f_{i}x_{i})^{2}]](/tpl/images/0717/4560/82aed.png)
![=\frac{1}{100-1}[254001-\frac{1}{100}(5026)^{2}]\\\\=\frac{1}{99}\times 1394.24\\\\=14.08323\\\\\approx 14.08](/tpl/images/0717/4560/26040.png)
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The mouse weights (in grams) of a random sample of 100 mice involved in a nutrition experiment are:...
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