Name: _
Statistical Analysis
Quiz 1 (15 points)
Instructions
This is an open book quiz. You have 15 minutes to complete the quiz. To
get full credit for each question, please provide your reasoning and
justification, NOT only the result.
SECTION F4
1. 60%
Statistical Analysis
Probability
Todays Topics
The Concept of Probability
Sample Spaces and Events
Counting Rules
Elementary Probability Rules
Conditional Probability and Independence
Bayes Theorem
Dependent vs. Independent Trials
What are the chances sal
Week 1 answers
4.13
Company
Low Risk (L)
Aerospace (A)
Food Retailer (F)
Total
6
15
21
a.
b.
c.
d.
e.
Moderate to High Risk
(MH)
9
10
19
Total
15
25
40
P(F) = 25/40
P(L)=21/40
P(MH)=19/40
P(FL)=15/40
P(FUL)=P(F)+P(L)-P(FL)=25/40+21/40-15/40=31/40
4.20
A:
n
x
i
Sample Mean 1 x1 x2 . xn
x i
n
n
Sample Variance
Sample Standard deviation
Population Mean
n
x x
s 2s i 1s
2
x
Population Variance
Population Standard Deviation
Probability of a Single Event A
Intersection of two events
Conditional probability
2
2
Statistical Analysis Quiz 2
Section : 510.601.52-1
An internet provider tells customers that its staff will arrive any time between 9am and 11am to install
high speed internet at their home, the probability of arrival is equal for all times in this window
Statistical Analysis Quiz 2
Section : 510.601.52-1
An internet provider tells customers that its staff will arrive any time between 9am and 11am to install
high speed internet at their home, the probability of arrival is equal for all times in this window
Name _
Section _
Statistical Analysis
FINAL EXAM
75 points
CLOSED BOOK, CLOSED NOTES NO PHONES, LAPTOPS, TABLETS OR OTHER
ELECTRONIC DEVICES.
You will be removed from the exam if you are in violation of this policy and in
violation of the CBS Honor Code.
Section: 510.601.52
IKEA claims that 95% of their customers are satisfied with their service.
a. What is the probability that exactly 9 out of 10 customers will be satisfied? (3 points)
10
9
p ( x=9 )=C 9 0.95 0.05
1
b. In a sample of 100, we find that 85
Statistical Analysis Quiz 1
Section : 510.601.52
In a recent survey of Baltimore homes, 10% of the homes have a deck and 52% have a parking space. Suppose
91% of the homes with a deck also have a parking space.
a. What percent of homes have a deck and a p
Statistical Analysis Quiz 1
Section : 510.601.52
In a recent survey of Baltimore homes, 10% of the homes have a deck and 52% have a parking space. Suppose
91% of the homes with a deck also have a parking space.
a. What percent of homes have a deck and a p
Name _
Statistical Analysis
Final Exam
(80 points; 40% of final grade)
Instructions
a. This is an open book, open notes exam.
b. No laptops or cellphones are allowed but you may use a
calculator
c. You have 3 hours to complete this exam.
d. For each of th
Name _
Statistical Analysis
Final Exam
(80 points; 40% of final grade)
Instructions
a. This is an open book, open notes exam.
b. No laptops or cellphones are allowed but you may use a
calculator
c. You have 3 hours to complete this exam.
d. For each of th
Name _
Statistical Analysis
Quiz 2 (15 points)
SECTION F4
1. A local coffee shop notices that, on an average, 10 people enter the shop every 30
minutes. The variance is 10. Assume that the number of arrivals follows a Poisson
Distribution and that the giv
Name _
Statistical Analysis
Quiz 2 (15 points)
Please DO NOT use any excel or write any excel formulas on this quiz
SECTION F4
1. A local coffee shop notices that, on an average 10 people enter the shop every 30
minutes. The variance is also 10. Assume th
Name: _
Statistical Analysis
Quiz 1 (15 points)
Instructions
This is an open book quiz. You have 15 minutes to complete the quiz. To
get full credit for each question, please provide your reasoning and
justification, NOT only the result.
SECTION F4
1. 60%
Statistical Analysis
Discrete & Continuous Random Variables
Agenda
Random variables
Discrete probability distributions
Continuous probability distributions
Review
Mean: average ( x )
2
Variance ( x ): deviations from the mean
Standard Deviation ( ):