19. A scientist wondered whether people from New England are taller on average than those in southwest US. He randomly sampled 100 adults from each region and found the following: (4 pts)
New
England
Southwest
US
Which of the following is/are valid conclusions based on the scientist's
findings? Select all that apply and explain your thinking for your choices.
a. There is no significant difference in heights between the regions.
F = 67.1 in
x = 66.5 in
0 = 4.13 in
0 = 3.13 in
b. Pegple in the southwest US are generally taller than those in New
England
c. Height is more consistent in New England than in the Southwest US.
d. Height is more consistent in the Southwest US than in New England,