A research company surveys 8,000 people. The company expects 6,000 people to respond favorably. If there is a percent error of 2
1 answer:
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Solution :
Given data :
20.1 33.5 21.7 58.4 23.2 110.8 30.9
24.0 74.8 60.0
n = 10
Range : Arranging from lowest to highest.
20.1, 21.7, 23.2, 24.0, 30.9, 33.5, 58.4, 60.0, 74.8, 110.8
Range = low highest value - lowest value
= 110.8 - 20.1
= 90.7
Mean =
Sample standard deviation :
S = 29.8644
Variance =
= 891.8823