- #1
thomas49th
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Homework Statement
From expirence a higher jumper knows he can claer a height of at least 1.78m once in 5 attempts. He also knows that he can clear a height of at least 1.65m on 7 out of 10 attempts
Assuming that the heights the high jumper can reach follow a Normal Distribution,
a) Draw a sketch to illustrate the information above
b) find, to 3 decimal places, the mean and the standard deviation of the heights the higher-jumper can reach
c) Calculate the probability that he can jump atleast 1.74m
Homework Equations
You'll need the distribution table
The Attempt at a Solution
Part a)
Well I can form the equations
P(h >= 1.78) =0.2
P(h >= 1.65) = 0.7
so what we're saying is the probability the height will be atleast 1.78m is 0.2
and
so what we're saying is the probability the height will be atleast 1.65m is 0.7
okay
so how do i go about drawing these on a normal distrubution. I think I have to do the flip around thing but I am not sure why?
Thanks :)