Use the given information to construct a 95% confidence interval estimate of the mean of the population. n = 62, σ = 11.4, = 102.1 a. 101.7 < μ < 102.5 b. 66.1 < μ < 138.1 c. 100.7 < μ < 103.5 d. 99.3 < μ < 104.9

Therefore, option D is correct.

Step-by-step explanation:

We have been given

The formula to find interval is: which is unknown mean.

So, 95% confidence interval is standard value of z-score at 95% confidence interval is 1.96

Substituting the values in the formula we will get:

On simplifying the above equation we will get:

Taking

and  

Therefore, option D is correct.

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

a is the right answer