Lesson 3 Y B Normal? Solidify Understanding
The enrollment at South Beach High School is
9th Grade | 10th Grade | 11th Grade | 12th Grade | Totals | |
---|---|---|---|---|---|
School Cafeteria | |||||
Off Campus | |||||
Totals |
Mariana plans to use her data to answer the following questions:
Do students prefer to eat on campus or off campus?
Is there a difference between grade levels for where students prefer to eat lunch?
1.
In Mariana’s sample, what percent of students prefer school lunch?
2.
What percent prefer to eat off campus?
3.
a.
For each grade level in her sample, determine the percent of students who prefer school lunch and the percent who prefer off-campus lunch.
9th Grade | 10th Grade | 11th Grade | 12th Grade | |
---|---|---|---|---|
Prefer School Lunch | ||||
Prefer Off Campus |
b.
Do you notice anything unusual?
4.
Based on her sample, Mariana concludes that students at South Beach High School overall like school lunch. Do you agree or disagree? Why?
A company generates a mean monthly revenue of
5.
Find the
6.
Assuming the company’s monthly revenue is normally distributed, what percent of the time does the company make more than this amount? Less than?
7.
What percent of the time does the company make between
8.
If the company needs to make
On the Wechsler Adult Intelligence Scale, an average IQ is
9.
IQ scores between
10.
One measure of genius is an IQ score above
11.
Einstein had an IQ score of
12.
What is the probability of an individual having a higher IQ than Einstein?
Without using technology, sketch the graph of the polynomial function with the given characteristics. Write the equation, if it’s not given.
13.
Degree:
Roots:
Equation:
14.
15.
16.
Degree:
Equation: