Suppose that we have constructed a 95% confidence interval for the true mean salary of graduating business majors: (50k, 70k). Based on this interval, what was the sample mean salary of our sampled business majors?a. 70kb. 55kc. 65kd. 60ke. 50k

d. 60k

Step-by-step explanation:

The sample mean is the midpoint between the lower and the upper limit of the confidence interval, that is, the sum of the lower and the upper limit divided by 2.

In this problem, we have that:

Lower limit: 50k

Upper limit: 70k

(50k + 70k)/2 = 60k

So the correct answer is:

d. 60k

what is the question here

step-by-step explanation:

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.