(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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

2. Relevant equations

You'll need the distribution table

3. 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 im not sure why?

Thanks :)

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# Homework Help: Normal Distrubution Question

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