Assume that iq scores are normally distributed, with a standard deviation of 11 points and a mean of 100 points.
if 85 people are chosen at random, what is the probability that the sample mean of iq scores will not differ from the population mean by more than 2 points?

Our required probability is 0.91.

Step-by-step explanation:

Since we have given that

n = 85

mean = 100 points

standard deviation = 11

We need to find the probability that the sample mean will not differ from the population mean by more than 2 points.

so, it becomes,

Hence, our required probability is 0.91.

ian gonna lie that is way to much

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this