A study investigated the association between cigar smoking and death from tobaccorelated
cancers. Data were obtained for a national sample of 137,243 American men.
Never smoked
Former smoker
Current smoker
Totals
Died from Cancer
Yes
No
Totals
782
120,747
An airline must decide which of two aircraft it will use on a flight from New York to Los Angeles. Previous
experience has allowed the airline to estimate the number of passengers on the flight as follows, where x is the
number of passengers.
(number of p
Sandoval, Yvonne
Mat 174
CONSUMER SURPLUS
TOTAL POSSIBLE REVENUE: $681,642,911
Definition
Formula for f (x )
361.787
Computation
f (x )
x
6
363.108
Plot Interval
A
B
0
2132
Integration Interval
a
b
0
2132
FUNCTION
f ( x ) dx
681642.9110
Constants
s
t
u
v
TICKER: CBRL
Current Close: $34.24
Cracker Barrel Old Country Store, Inc.
307 Hartmann Drive
Lebanon, TN 37087
United States - Map
Phone: 615-444-5533
Fax: 615-443-9818
Web Site: http:/www.crackerbarrel.com
RelFreq
0.007662835
0.036398467
0.0651341
0.0555
Business Mathematics I
Homework 9
PROBABILITY DISTRIBTUTIONS
Prepared for
Yvonne Sandoval
Math 173
Pima Community College, WC
By
Team # Submitted on
10/12/2009
We, the undersigned, affirm that all of us participated fully and equally in the completion
of
DAILY SALES
Records of the number of sales per day and the daily gross
sales have been kept for four years. Since the business is open 5
d ays per week for 50 non-holiday weeks per year, there are 1,000
d aily records.
Day
N umber
1
6
11
16
21
26
31
36
41
The exercises given below refer to the data in Cars.xls.
Exercise 3 How many of the vehicles in the data were Jeep Cherokees, made in 1998,
and repaired in Utah?
Solution.
Model
Jeep
Model
Location
Year
of Repair
1998 Utah
Estimated
Speed
(mph)
Repair
Cos
Exercise 12 Let X be the number of tails obtained in two tosses of a fair coin. Compute .
Solution.
x
0
1
2
f(x)
0.25
0.5
0.25
1
E(x)=
x*f(x)
0
0.5
0.5
1
Total # of Records = 4
Exercise 13 You can invest in either Project A or Project B. If you invest in
Borrower
Years
Experience
in Business
3
Name
John Doe
Full Value
$7,100,000
Education
Level
High School
Loan
Foreclosure
Value
$2,066,000
Economy
Condition
Normal
Default
Value
$700,000
Let S be the event that an attempted work out is successful and let F
UATopic:
Histograms andPolygons
HistogramsandPolygons Midpointsonthehorizontalaxis
RelativeFrequencyontheverticalaxis
SOURCE DATA
Midpt
y
yc
cn
nu
uq
qr
rF
Fv
vi
it
ta
al
le
eR
R
0
2
4
6
8
10
12
14
16
18
20
22
24
Frequency
0.16
0
0.18
0.142
0.16
0.124
0.1
Give your answers with monetary amounts rounded to dollars and cents, and rates and yields in
percents, rounded to three decimal places. All other solutions are the regular rules of rounding to
three decimal places.
Exercise 1
(i) What is the value of $74
Exercise 1 (i) Use repeated computation in the file Bank Customers.xlsm to generate a set of six
fractions for 50 day periods. (ii) Repeat this for six 500 day periods. (iii) Repeat this for six
2,000 day periods. (iv) What pattern do you see?
Solution.
(
Eighty percent of theemployees at theGeneral Mills plant on Laskey Road havetheir wages sent directly to
their bank by electronic transfer ( direct deposit) . Supposeweselect a randomsampleof
seven employees.
Verify the four Binomial conditions as they ap
Exercise Given the function f(x) = x3 4x2
(i) Graph the function using Graphing.xls
(ii) Determine the average rate of change of the function between x = 0 and x = 10.
Sketch in the secant line.
(0,0)
(10,600)
(600-0)/(10-0) = 60
Exercise The graph shows