In a class there are 20 students: 3 are 5' 6", 5 are 5'8", 4 are 5'10", 4 are 6', and 4 are 6' 2". A student is chosen at random
2 answers:
Answer:
The student's expected height is 5' 10.1".
Step-by-step explanation:
In a class there are 20 students: 3 are 5' 6", 5 are 5'8", 4 are 5'10", 4 are 6', and 4 are 6' 2".
First we will convert these heights to inches like:
12 inches = 1 feet
5' 6" = = 66
5'8" = = 68 and so on.
So, we get following heights in inches:
66, 68, 70 ,72, 74
Expected height = (3/20)66 + (5/20)68 + (4/20)70 + (4/20)72 + (4/20)74 = 70.1 inches.
Or in feet, it will be : 5' 10.1"
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