This week, Michael collected $468 for delivering newspapers. He had 40 repeat customers and 18 new ones. As an incentive, he cha
1 answer:
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Answer:
The length of the road that runs straight from Pittsburgh to Jeanette is 29.8 miles
Step-by-step explanation:
We are given
Bethel Park is 28 miles directly west of Jeanette
10.3 miles directly south of Pittsburgh
We can draw diagram
we can see that this is triangle
so, we can use Pythagoras theorem
and we get
now, we can solve for x
So,
The length of the road that runs straight from Pittsburgh to Jeanette is 29.8 miles
a. This information is given to you.
b. We want to find
so we first transform to the standard normal random variable
with mean 0 and s.d. 1 using
where are the mean/s.d. of
. Now,
where is the CDF for
.
c. The 76th percentile is the value of such that
Transform to
and apply the inverse CDF of
.