Question

PLS ANSWER PROPERLY . YOU WiLL GET 15 POINTS
4. Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarized as follows. Find the mean heart beats per minute for these women, choosing a suitable method.

Number of heart beats per min 65-68 68-71 71-74 74-77 77-80 80-83 83-86
Number of women 2 4 3 8 7 4 2

Answer 1

Answer:

76.13333....

Step-by-step explanation:

find mid value which will be x. then calculate fx

then use the formula.