A doctor took a random sample of n = 6 patients to see how long they each spent in the waiting room. She wants to construct a t interval for the mean waiting time with 99% confidence. The times in the
sample were roughly symmetric with a mean of z = 8.5 minutes and a standard deviation of sx = 2.8
minutes.

4

step-by-step explanation:

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.