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Rashid [163]
3 years ago
15

HElp me please. You will get points.

Mathematics
2 answers:
marysya [2.9K]3 years ago
8 0

Answer:

the mean is 12.5

Step-by-step explanation:

DedPeter [7]3 years ago
8 0
52.8 minutes

Since it’s an estimate choose a midpoint of each category to represent its time value
15 min for 0-30 min group
45 min for 30-60
75 min for 60-90
105 min for 90-120

Then multiply the time for each group by the number of students and add together

15x7+45x27+75x12+105x4 = 2640 minutes
Then divide by the total number of students 50

2640/50=52.8 minutes
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