Suppose we have a collection of the heights of all students at your college. each of the 250 people taking statistics randomly takes a sample of 40 of these heights and constructs a 95% confidence interval for mean height of all students at the college.
which of the following statements about the confidence intervals is most accurate?
a) about 95% of the heights of all students at the college will be contained in these intervals
b) about 95% of the time, a student's sample mean height will be contained in his or her interval.
c) about 95% of the intervals will contain the population mean height.
d) about 95% of the intervals will be identical
the y intercept is 3
you can also say that the y intercept is at (0,3) which is a more detailed answer. however saying "y intercept is 3" is sufficient enough because the x coordinate of the y intercept is always x = 0.
the y intercept is the location where the graph crosses or touches the y axis. this is at the halfway point between the 2 and 4, so (2+4)/2 = 6/2 = 3
]answer: 3+18=21 is the fiinal answer.