Alternatively, you could have wrote down the formula instead of describing it with words. maybe then I could have helped you
Answer:
Are you missing part of question or maybe options
Answer:
13/24
Step-by-step explanation:
I got it right.
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
You divide then you square root the answer. once you get the answer you squate root again giving you 1.2
