BSTAT Test 3 Problems
1. Suppose 45% of buyers in a car market prefer to buy an American made car.
Suppose we take a random sample of 2000 buyers from this car market. Using the
normal distribution, what is the probability that more than 930 buyers in our
Final Exam
Math 114 - Statistics for Business
Fall 2009
Name:
Section: (circle one)
1
2
3
4
5
6
INSTRUCTIONS:
This exam contains 24 problems. The rst 16 are multiple-choice, and are 3 points
each.
Record the answers to problems 1 to 16 on the cover shee
Disclaimer: The review problems that follow are intended for all of the statistic courses that I am
teaching this semester: Math 1110, Math 1140. As such, the topics that are covered are common to a
both courses. This being the case, there are many topics
Practice Test 4 Bus 2023
Directions: For each question find the answer that is the best solution provided. There is only one
correct answer.
1.
For a sample size of 30, changing from using the standard normal distribution to using the t
distribution in a
6.1,6.2 Part 1: Critical Values
Definition 1:For any real number such that 0 1, z/2 is the positive number so that the area to
the right of z/2 and beneath the standard normal curve is /2.
Area = /2
Definition 2: For any real number such that 0 1, z/2 is
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BSTAT Test 2 Problems
From notes 1/30:
1. Data for 2012 auto sales in large population consist of the following figures (in
1000s of cars sold):
GM
140
Ford
130
Chrysler
85
European
135
Asia
160
Develop a probability model to answer the question: if we ch
Fairdice,n=10
Unfairdice,n=10
Fairdicen=100
Unfairdice,n=100
Fairdice,n=1,000
Unfairdice,n=1,000
Fairdice,n=10,000
Unfairdice,n=10,000
Compare the relative frequency of each outcome to that predicted by probability
calculations in a table. Compare the sam
Rebecca Berg
Section 2
Project #6
Created Experiment
Your initial description of your experiment: New York University education
department is conducting a survey of how many households in Westchester County, New
York have a nanny. This includes full time
Exam 3 Math 1140 4/13
Name_
Section _ Show all relevant work. Round off your answers to 4 decimal places. Please do not
detach any pages from the exam. All problems are worth 9 pts. There are 11 problems.
1) Find the critical value ( /2 /2,1) ) that is ap
Exam 3 Math 1140 4/13
Name_
Section _ Show all relevant work. Round off your answers to 4 decimal places. Please do not
detach any pages from the exam. All problems are worth 9 pts. There are 11 problems.
1) Find the critical value ( /2 /2,1) ) that is ap
MATH 1140-03,04
TEST #1 KEY
FEBRUARY 6, 2013
1. Consider the following methods of presenting/simplifying data. Place each
method under the appropriate heading, qualitative or quantitative.
Frequency table, bar chart , correlation, pie chart, histogram, sa
Math 114 - Final
Tuesday, December 11th , 2007
Name:
Instructions:
1. On the multiple choice questions, you are required to circle the correct answer for each
question. No partial credit will be given on those questions.
2. On the True/False questions, yo
2. Consider the following methods of presenting/simplifying data. Place each
method under the appropriate heading, qualitative or quantitative.
box plot, bar chart, scatterplot, pie chart, histogram, sample mean, sample
standard deviation, median, correla
d. Are there any points suspicious for outliers? Explain.
ANSWER: Q1-1.5*IQR = 64.9-1.5*16.2=40.6 WHILE Q3+1.5*IQR
=81.1+1.5*16.2=105.4. SCANNING THE DATA WE SEE NO OBSERVATIONS
OUTSIDE THESE LIMITS SO WE DONT IDENTIFY ANY OUTLIERS.
2. Consider the follow
MATH-1140 (DUPRE ) SPRING 2013 TEST 2 ANSWERS Suppose that X and Y are unknowns with =12, =4, =23, and =6. Further X X Y Y suppose that the correlation coefficient giving the correlation of X with Y is = .8. Calculate the numerical values indicated for p
Chapter 12: 1-5
The multiple linear regression model is
y0 1x1 2x2 3x3 kk xk .
Here y denotes the dependent or response variable, x 1, x2, xp denote the independent or
explanatory variables and is a random variable.
Observations: Each observation consists
Lab Exercises for week 4/29 Math 1140
Name_
We will develop a multiple regression model for the Price of beef y=PBE with four predictors: x 1= CBE;
x2=PFO; x3=CFO and x4=RDINC. Observations were made for a number of years, the observations were
input into
Home-court is an advantage . especially in the Playoffs
By, John Schuman
Schuhmann, John. "Home-court Is an Advantage . Especially in the Playoffs." NBA. 17
Apr. 2009. Web. 5 Oct. 2014.
<http:/www.nba.com/2009/news/features/john_schuhmann/04/17/homecourt2
Rebecca Berg
Project #3
Section 2
Part 1
-What is the probability of selecting a good prize initially?
1/3 or 33%
-How many choices of doors did the contestant have initially?
3 doors to choice from initially
-How many choices of doors lead to a good priz
mam-m cm
TEST
RULES- Do all work on this test POW. ,
getting no credit. was or 34 alum ,
provided. No laptops allowed. Test is _' ,
1. A normal population of
(a) Using Ta_b_!g_z. find the
intermediate data! so m: l mm. » . l
(b) Use vour ll calculator
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NAME: W (OWN (9 D MATH 144 SETION 05
DR. LlU-KKONEN
TEST #3 APRIL 21, 2010
RULES: Do all work on this test paper. Label answers clearly. Show workunsupported answers risk
getting no credit. Tl-83 or 84 calculator required. One 89:11 page of your own n
Quentin Tarantino Film Gross
Goal
I am interested in attempting to figure out if budget plays a role in
how much profit/loss Quentin Tarantinos films generate.
What is the data?
- A list of the total gross (in the United States) of Quentin Tarantinos
fil
Does Money Buy a
Higher Starting Salary?
Objective
To examine the 10 most expensive private colleges/universities in the
United States (tuition only) and the average starting salary from each
school to determine if the more expensive the college, the hig