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
7 is the answer 4 and lower you round down 5 and up is up
I think the correct answer is c please don’t be mad if I am wrong❤️
Probability
p=66×100/1818=3.6303630363%
After rounding to 4 decimals:
p=3.6304%