Leiff goes online to buy a new video game. he finds a site that currently has a promotion of 15% off on all orders over $50. leiff decides to buy his video game, with a price tag of $128, at this site because he knows that he will get the 15% discount when he checks out. leiff pays 5.3% sales tax on the discounted price and pays a shipping fee of $4.75. what is the total of leiff’s online purchase?
a.
$112.84
b.
$114.57
c.
$118.82
d.
$119.32

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?