Find the probabilities for a standard normal random variable Z.
1 answer:
Answer:
Step-by-step explanation:
find the attachment showing std normal curve symmetrical about y axis.
Equal probabilities on either side of the mean thus the total probability to the right of mean is 0.50
From the table we can find that
a) P(Z>2.5) = 0.5- area lying between 0 and 2.5
= 0.5-0.4938 =0.0062
b) P(1.2<z<2.2) = F(2.2)-F(1.2)
= 0.9861-0.3849
=0.6012
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Answer:
Step-by-step explanation:
We have to find profit .
This can be easily found using a formula for Profit given the Revenue and Cost.
Given that:
to find P(x) we can simply subtract R(x) by C(x).
and finally, after simplify this equation subtracting 6x by 2.3x.
this is the equation for the profit