Ask Question
21 August, 06:55

In a survey that asked about 75 people about their fitness schedules, 50 of the respondents said they spent an average of 45 minutes a day exercising. The rest said they spent an average of 30 minutes a day exercising.

What is the average time spent exercising by all the respondents?

A. 42 minutes

B. 33 minutes

C. 38 minutes

D. 40 minutes

+2
Answers (2)
  1. 21 August, 08:42
    0
    Average=mean

    Mean = sum of scores divided by number of scores

    50 responders spend 45 minutes

    The others spend 30 minutes

    75-50 = 25

    So, 25 responders spend 30 minutes

    50*45+25*30 divided by 75 (because 75 is the total number of responders)

    Which equals to 40 minutes
  2. 21 August, 08:53
    0
    D. 40 minutes
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “In a survey that asked about 75 people about their fitness schedules, 50 of the respondents said they spent an average of 45 minutes a day ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers