STAT 1430
REC 8A
DISCRETE R.V.
Instructions:
For full credit, use proper notation and write out any formulas you use during
this recitation (when applicable). Answers without supporting work will not be
given full credit.
Multiple Choice and True/False
1.
STAT 1430 Recitation 6ASimpsons Paradox and Probability Rules
Mike and Tom are on a baseball team. They keep track of their batting statistics
for two seasons. They count the number of times they got a hit, and the number of
times they were at bat (that m
Stat 1430
Rec 6B
Probability Rules Part 2
The following table shows data from a random sample of 100 drivers who own cars.
Number of speeding tickets in the last 6 months, and whether or not they drive a fast car
were recorded. (Fast car is defined as a c
STAT 1430
Recitation 7A
Conditional Probability
Use the information below to answer #1-#7
28% of Fortune 500 companies are laying off employees. Moreover, 18% of those laying off employees are
cutting down on advertising expenses. Of those companies who a
Stat 1430
Recitation 7B
Probability Review
Bob thinks more female college students eat breakfast in the morning than males.
Suppose a survey of college students asked whether they ate breakfast this morning or not, along
with their gender. The results are
Stat 1430
Recitation 8B
Discrete RVs Part II
Together with your TA, go through the process of creating the probability distribution for
X = the number showing on the face of a six-sided dice after a single roll
You will then use the probability distributi
A psychologist studied self-esteem scores and found the data set to be normaly
distributed with a mean of 50 and a standard deviation of 6.
Part A”What raw score cuts off the bottom 33% of this distribution?
Steps:
Q1: What is the z-score that cuts off th
Module 2 Questions
The following 4 questions (Q1 to Q4) are based on the following article:
PER CAPITA INCOME OF U.S. SPRINKS RELATIVE TO OTHER COUNTRIES
(from UTTS, 2005, page 24)
An independent research group, the Institute for Foreign Investment, has n
Module 1 QuestionsSubmit answers via email to [email protected] according to above
instructions: (There are 20 questions to be answered for Module 1)
Q1: The goal(s) of statistical procedures are to
A. predict or infer what might happen in the future
B. d