The ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 27.3 years, with a standard dev
iation of 3.4 years. The winner in one recent year was 22 years old.
(a) Transform the age to a z-score.
(b) Interpret the results.
(c) Determine whether the age is unusual.
(a) Transform the age to a z-score.
(b) Interpret the results.
(c) Determine whether the age is unusual.
1 answer:
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Answer:
Step-by-step explanation:
When you have exponents above a like term and they are being multiplied together, you add them.
For example:
So let's group like terms in the numerator:
We can add terms like in the example.
Let's rearrange the denominator.
Now we have:
Cancel like terms
4/8 = 1/2
= 1 So it cancels
= s Since s is raised to the -1 it goes on top and becomes s.
Now we combine everything back together: