Question

The following table shows the data collected from a random sample of 100 middle school students on the number of hours they play outdoor games every week: Weekly Duration of Outdoor Games Time (in hours) 0–2 3–5 6–8 9–11 Number of Students 30 62 8 0 There are 1,200 students in the school. Based on the sample proportion, how many students in the school would be expected to play outdoor games for at least three hours every week? 744 840 960 1,104

Answer 1

I believe your answer is 840. Hope this helps!

Answer 2

Answer: Second option is correct.

Explanation:

Since we have given that

Weekly Duration of Outdoor Games Number of students

0-2 30

3-5 62

6-8 8

9-11 0

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Total 100

so, Probability of getting number of students for at least three hours every week is given by

`(62+8)/(100)=(70)/(100)`

Since the number of students = 1200

so, Expected number of students in the schools is given by

`(70)/(100)* 1200\\\\=840`

Hence, Second option is correct.