What are you asking. are you trying to figure out what z is
We have x^(-4) • x^(7).
This leads to x^(-4 + 7).
Work out the math inside the parentheses.
ANSWER: x^(3).
Did you follow?
Answer:
Step-by-step explanation:
Let X be the number of persons out of 12 who have RH negative blood.
X is binomial since each person is independent of the other to have Rh negative blood.
n =12
a) What is the probability that exactly 5 of those patients will have Rh negative blood?
P(X=5) =
b) What is the probability that at least 3 of them will have Rh negative blood?
=0.6397
c) What are the expected number and standard deviation of the number of these patients with Rh negative blood?
E(X) = np = 
Var(x) = npq = 
Std dev = 
Answer: The answer is c
Step-by-step explanation:
Area = 78.54
Radius is 5
Pie is 3.14
^
multiply and square it