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QUESTION
s of 10-year-old boys vary according to a Normal distribution with = 138 cm and = 7 cm a) What proportion of this population is less than 150 cm tall?...
We’ve established that heights of 10-year-old boys vary according to a Normal distribution with μ = 138 cm and σ = 7 cm
a) What proportion of this population is less than 150 cm tall?
b) What proportion is less than 140 cm in height?
c) What proportion is between 150 and 140 cm?
