Question

Practice Problem As before, a similar study looked at the number of babies in an inner-city hospital in a different city who were born addicted to cocaine. It was found that the distribution of babies born each month who were addicted to cocaine was bell-shaped. This distribution has a mean of 50 babies and a standard deviation of 4. Fill in the label marks for the base of the normal curve as demonstrated above. Ī – 3s [three SDs below] Ī – 2s = [two SDs below] ला S = [one SD below] C = [the center] 68% 95% 99.7% of the l of the of the values | values values T +s= [one SD above] T + 2s = [two SDs above] T + 38 [three SDs above]

Answer 1

Ans : Given that mean = 50 babies

standard deviation =4

$\large \bar{x}$ -3s	38	three SD's below
$\large \bar{x}$ -2s	42	two SD's below
$\large \bar{x}$ -s	46	one SD's below
$\large \bar{x}$	50	the center
$\large \bar{x}$ +s	54	one SD' Above
$\large \bar{x}$ +2s	58	two SD' above
$\large \bar{x}$ +3s	62	three SD' above

х -Зо -20 -10 и 10 20 Зо

38 42 46 50 54 58 62