Question

listed below are pulse rates (beats per minute) from samples of adult males and females. find the mean and median for each of the two samples and then compare the two sets of results. does there appear to be a difference? male: 85 72 53 89 71 67 60 65 60 62 56 64 64 82 83 female: 51 79 58 89 91 84 68 77 92 72 56 86 73 78 62 find the means. the mean for males is □ beats per minute and the mean for females is □ beats per minute. (type integers or decimals rounded to one decimal place as needed.)

Explanation:

Step1: Calculate mean for males

The formula for the mean $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$. For males, $n = 15$, and the data set is $85,72,53,80,71,91,60,65,60,62,55,64,64,82,83$.
$\sum_{i=1}^{15}x_{i}=85 + 72+53+80+71+91+60+65+60+62+55+64+64+82+83 = 1087$.
$\bar{x}_{males}=\frac{1087}{15}\approx72.5$

Step2: Calculate mean for females

For females, $n = 15$, and the data set is $51,79,58,89,91,84,68,77,92,72,66,96,73,78,82$.
$\sum_{i = 1}^{15}x_{i}=51+79+58+89+91+84+68+77+92+72+66+96+73+78+82 = 1116$.
$\bar{x}_{females}=\frac{1116}{15}=74.4$

Answer:

The mean for males is $72.5$ beats per minute and the mean for females is $74.4$ beats per minute.