Section 9 - Topic 8 The Empirical Rule
1. Kolope's in Kolomaroo Michigon has a mochine that is the fruit Loop
cereal boxes with cereal. It dispenses cereal with a normal distribution and
hos meon of 24.0 and a standard deviation of 1 ounces.
2. ACT mathematics scores for a particular yecr are normally distributed with
a mean of 27 points and a standard deviation of 2 points.
Port A: What is the probability that a randomly selected score is greater
thon 29 points
Port & what percentage of students' scores are between 31 and 232
Port A: The middle 95% of cereal boxes contain between
and
Ounces of cereal
Port C. A student who scores a 31 is in the
percentile
Port & Approximately 68% of cereal boxes have between
and
ounces of cereal
Port C. What percentage of cereal boxes contain more than 242 ounces
of cereale
3. Mr. Bomett's test is normally distributed with a mean of 65 points and a
standard deviation of 5 points
Port A: What is the probability that a randomly selected score is greater
thon 75 points
Port D: What is the probability that a randomly selected box of cereal
contains less than 24.1 ounces of cereal
Port & what percentage of students' scores are between 60 and 702
Port C: A student who scores on 80 is in the
percentie