Question

Suppose the length of time cats sleep each day is normally distributed with a mean of 15 hours and a standard deviation of 2 hours. Which group describes 16% of the cat population? Select each correct answer. cats that sleep more than 17 hours a day cats that sleep less than 13 hours a day cats that sleep more than 19 hours a day cats that sleep less than 11 hours a day

Answer 1

Hello,

N(0,1)(1)=0.8413

We find 16% for -infinity<=X<=-σ ==>13h (15-2)

Answer B :"cats that sleep less than 13 hours a day"