BUAD 644: Business Economics and Statistics
HW 1: Descriptive Statistics
100 pts
Due: June 28, 2016 (at the beginning of class)
Data set: For this assignment, you will be using a subset of the Current Population Survey from June
2015. (downloaded from htt

BUAD 644: Business Economics and Statistics
HW 4: Inflation and Unemployment (Phillips Curve)
Due: Session 8
NOTE: your score will be out of 15 points so you have the potential to earn 5 extra credit
HW points on this assignment.
Topic Description: For th

BUAD 644: Comprehension Check 5
1. (5 points) Below are 3 scatterplots displaying relationships between variables. Below the scatterplots are
several correlations. Choose the correlation that best matches each scatterplot, and put the appropriate letter i

BUAD 644: Comprehension Check 7
Due Session 7
1. (5 pts ) a. Complete the following cost schedule: (Ch. 21, p. 649 (477), #1)
Output
Total Cost
0
$600
1
800
2
1,050
3
1,400
4
1,800
5
2,300
Marginal
Cost
Average
Fixed Cost
Average
Variable
Cost
Average Tot

BUAD 644: Comprehension Check 3
100 pts
Due: July 5, 2016
1. (25 pts) Refer to the contingency table shown below. (#5.94)
a. Calculate each of the following probabilities and explain in words what it means.
i. P(S) = .32
ii. P(W) = .85
iii. P(S|W) = .3412

BUAD 644: Comprehension Check 2
100 pts
You must show your work for credit. Please put your name on every page and number your pages. All of
the exercises need to be completed without using MegaStat or any other statistical software.
Statistics
1. (10pts)

BUAD 644: Comprehension Check 7
100 pts
You must show your work for credit. Please put your name on every page and number your
pages. All of the exercises need to be completed without using MegaStat or any other statistical
software. You are not allowed t

BUAD 644: Comprehension Check 3
100 pts
You must show your work for credit. Please put your name on every page and number your pages. All of
the exercises need to be completed without using MegaStat or any other statistical software.
Statistics
1. (15pts)

BUAD 644: Comprehension Check 5
100 pts
You must show your work for credit. Please put your name on every page and number your pages. All of
the exercises need to be completed without using MegaStat or any other statistical software. You are
not allowed t

Frequency Distribution - Qualitative
PREDUCA5
Less than HS
HS
Some College
Associate
BS or higher
frequency
91
305
239
115
256
1006
percent
9.0
30.3
23.8
11.4
25.4
100.0
Educational Distribution of Current Population
35
30
25
20
15
Percent of Participants

BUAD 644: Comprehension Check 4
100 pts
You must show your work for credit. Please put your name on every page and number your pages.
Statistics
1.
(9 pts) Calculate each binomial probability (p.226, #6.22):
a. Fewer than 4 successes in 12 trials with a 1

BUAD 644: Comprehension Check 2
100 pts
1. (10pts) Below are five questions from a survey of MBA students. Answers were written in the
blank at the left of each question. For each question, state the data type (categorical, discrete,
numerical, or continu

BUAD 644: Comprehension Check 3
100 pts
1. (25 pts) Refer to the contingency table shown below. (#5.94)
a. Calculate each of the following probabilities and explain in words what it means.
i. P(S) 320/1000 = 32%
ii. P(W) 850/1000 = 85%
iii. P(S|W) 290/850

Ho : y - 2.20
Ha : p a6 2.20
(1.973, 2.108)? Assume that the alpha level for the test is .0] and the conﬁdence level was 99%.
l2. Which of the following is the correct result for the hypotheses and the conﬁdence interval
a. The null hypothesis should be r

Frequency Distribution - Qualitative
PRMJOCGR
Management, professional, and related occupations
Service Occupations
Sales and office occupations
Farming, fishing, and forestry occupations
Construction, and maintenance occupations
Production, transportatio

BUAD 644: Comprehension Check 8
Due Session 8
1. (5 pts) Suppose youll have an annual income of $30,000 for each of the next three years, and
the inflation rate is 5% per year. (Ch. 7, p. 762 (148), #5)
a. Find the real value of your $30,000 salary for ea

BUAD 644: Comprehension Check 2
Due June 28, 2016
100 pts
1. (10pts) Below are five questions from a survey of MBA students. Answers were written in the
blank at the left of each question. For each question, state the data type (categorical, discrete
nume

1. The fracture strength of a certain type of manufactured glass is normally distributed with
a mean of 579 MPa with a standard deviation of 14 MPa. (a) What is the probability that
a randomly chosen sample of glass will break at less than 579 MPa? (b) Mo

Dave the jogger runs the same route every day (about 2.2 miles). On 18 consecutive days, he recorded the number of st
x-bar =
s=
3278.72
97.05
(a) The 95% confidence interval for the true mean number of steps = [x-bar - t * (s/sqrt n
(b) Sample size = (t

Unit III Review Questions
Questions 5-6 refer to the following diagram and
assume a perfectly competitive market structure.
Questions 1 and 2 are based on the chart below, which
gives a firms total cost of producing different levels of
output.
Output
Tota

Critical thinking and errors in conclusions.
1. Conclusions from small samples. Aunt Harriet smoked and lived a long time so smoking is OK
2. Conclusions from non-random samples. Redlands Sushi Restaurant and Redlands Steakhouse
are overpriced so all rest

Supply
Quantity of a product or service that producers have for sale
Demand
Quantity consumers are willing and able to buy
Fossil Fuel
Energy source formed from the residue of plants and animals buried millions of years
ago.
Proven Reserves
Supply of ener

BUAD 644: Comprehension Check 4
100 pts
1. (20 pts) A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was
weighed on a very accurate scale. (#8.62)
The results in grams were
3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.43

BUAD 644: Comprehension Check 5
100 pts
(Note: These are odd numbered problems from your textbook, so you have access to the solution before you take
the Statistics final online. Hence, you will only get full credit for solving these problems when you sho

NAME:
1. Recent talks amongst lawmakers suggested giving tax breaks to automakers whose cars have average gas
mileage: exceeding 31 mpg. A random sample of 35 vehicles produced by a major automaker was taken, and
the average g” mileage for these vehicles