Answer:
The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159
Step-by-step explanation:
According to the given data we have the following:
mean = μ= 22
standard deviation = σ = 2
n = 100
μx = 22
σx=σ/√n=2/√100=0.2
Therefore, P( x < 21.8)=P(x-μx)/σx<(21.8-22)/0.2
=P(z<-1)
= 0.159
The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159
Answer:
it it negative
Step-by-step explanation:
A Because y=mx+b So if you graphed it then it would be A
Answer:
the answer is A
Step-by-step explanation:
the formula is 2π rh +2πr^2
you put the values in
2π (6*15) +2π(6)^2
then you solve
180π+ 72π= 252π