Answer:
option a
Step-by-step explanation:
given that at a large Midwestern college, 4 % 4% of the students are Hispanic.
A random sample of 20 students from the college is selected.
We have each student is independent of the other to be hispanic
p = success = being hispanic = 0.04 while
q = failure = being non hispanic = 0.96
X - no of hispanics is thus binomial with p = 0.04 and n =20 (sample size)
Since X is binomial
Var(x) = npq = 0.768
Std dev (x) = Square root of variance =
rounded off it gives 0.88
So option a is right
Answer:
y
x
Step-by-step explanation:
simple stuff, which part don't you get?
Answer:
x = 98 mm
Step-by-step explanation:
129.2 / 68 = 57 / (x - 68)
Cross multiply
129.2(x - 68) = 68 * 57
129.2x - 8785.6 = 3876
129.2x = 12661.6
x = 12661.6 / 129.2
x = 98