Question 11 (1 point) A sample of 100 smokers revealed that the sample mean of money spend per week is
$20
and the sample standard deviation is
$5
. What is the probability that a sample of 100 steady smokers spend between
$19
and
$21
?
◻
0.4772 0.0228 0.9544 0.6555 Question 12 (1 point)