STAT 200 QUIZ 1
NAME: _ _
I have completed this assignment myself, working independently and not consulting anyone
except the instructor.
INSTRUCTIONS
There are four problems (on four pages), the last one being actually a single question; the first
three
Week 1
3. If you are told only that you scored in the 80th percentile, do you know from
that description exactly how it was calculated? Explain.
There are multiple ways to calculate a percentile. According to Lane, there are 3 ways to
calculate percentile
Week 2
7.
Eye
Color
Brown
Blue
Green
Gray
Number of
Students
11
10
4
1
a. Pie Chart
Eye Color of Students
Brown
Blue
Green
Gray
1
4
11
10
b. Horizontal bar graph
Eye color of Students
Gray
Green
Number of Students
Blue
Brown
0
2
4
6
8
10
12
c. Vertical Ba
7. You flip a coin three times. (a) What is the probability of getting
heads on only one of your flips? 1/8 = 0.125
(b) What is the probability of getting heads on at least one flip?
1-1/8 = 7/8
27. A refrigerator contains 6 apples, 5 oranges, 10 bananas,
1. A pollster selected 4 of 10 available people. How many different groups of 4 are
possible?
The number of different groups of 4 are possible = 10C4 = 210
2. Your firm has a contract to make 1000 staff uniforms for a fast food retailer. The
heights of th
Daniel Colllazo
Lane et al
3. If you are told only that you scored in the 80th percentile, do you know from that description exactly
how it was calculated? Explain.
Only knowing that I scored in the 80th percentile doesnt give me enough information. I wou
Homework Assignments/ Week 3
Lane et al. Chap 5.
5. A fair coin is flipped 9 times. What is the probability of getting exactly 6 heads?
5. 6C9*(1/2 )^6*(1-1/2)^3 = 0.164 or 16.4% chance of getting exactly 6 heads.
7.You flip a coin three times. (a) What i
Homework Assignments/ Week 4
Lane et al. Chapter 7
8. Assume the speed of vehicles along a stretch of I-10 has an approximately normal
distribution with a mean of 71 mph and a standard deviation of 8 mph.
a. The current speed limit is 65 mph. What is the
Homework Assignments/ Week 2
Lane et al. Chapter 2/3
7. For the data from the 1977 Stat. and Biom. 200 class for eye color, construct:
A. pie graph
B. horizontal bar graph
C. vertical bar graph
D. a frequency table with the relative frequency of each eye