Maths P6 Help Needed - Normal Distribution

[ashutoshamatya]

6. The heights of students at a university are assumed to follow a normal distribution. 1% of the students are over 200 cm tall and 76% are between 165 cm and 200 cm tall.
Find
(i) the mean and variance of the distribution, [6]
(ii) the percentage of the students who are under 158 cm tall. [3]

 

[Tanya_Michelle]

hey did you get the answer to this?

 

[nabeelah]

p(X>200)=0.01
p(165<X<200)=0.76
then u standardise!