Kevin is riding his bike to work. He can bike 6 1/2 kilometers in 3/5 of an hour. How many kilometers can Kevin bike in one hour
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Answer:
Step-by-step explanation:
Let X the random variable that represent the IQ scores, and for this case we know the distribution for X is given by:
Where and
We want to find this probability
And we can use the z score formula given by:
If we apply this formula to our probability we got this:
And we can find this probability with this difference:
And in order to find these probabilities we can use the normal standard table or excel and we got.