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HI6007 T12018 Group Assignment Page 1 HOLMES INSTITUTE FACULTY OF HIGHER EDUCATION HI6007 Group Assignment Due End of Week 10 WORTH 30% (Maximum 5 students in the group) MS Excel must be used for...

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HI6007 T12018 Group Assignment Page 1


HOLMES INSTITUTE
FACULTY OF HIGHER EDUCATION
HI6007 Group Assignment
Due End of Week 10
WORTH 30%
(Maximum 5 students in the group)

MS Excel must be used for performing calculation/graphical presentation as required
in this assignment


Question XXXXXXXXXXmarks

Missy Walters owns a mail-order business specializing in clothing, linens, and furniture for
children. She is considering offering her customers a discount on shipping charges for
furniture based on the dollar-amount of the furniture order. Before Missy decides the
discount policy, she needs a better understanding of the dollar-amount distribution of the
furniture orders she receives.

Missy had an assistant randomly select 50 recent orders that included furniture. The
assistant recorded the value, to the nearest dollar, of the furniture portion of each order. The
data collected is listed below (data set also provided in accompanying MS Excel file).

XXXXXXXXXX XXXXXXXXXX
XXXXXXXXXX XXXXXXXXXX
XXXXXXXXXX XXXXXXXXXX
XXXXXXXXXX XXXXXXXXXX
XXXXXXXXXX XXXXXXXXXX


a. Prepare a frequency distribution, relative frequency distribution, and percent
frequency distribution for the data set using a class width of $5 XXXXXXXXXX3 marks)

. Construct a histogram showing the percent frequency distribution of the furniture-
order values in the sample. Comment on the shape of the distribution XXXXXXXXXXmarks)

c. Given the shape of the distribution in part b, what measure of location would be most
appropriate for this data set? XXXXXXXXXXmarks)
















HI6007 T12018 Group Assignment Page 2


Question 2 XXXXXXXXXX6 marks

Shown below is a portion of a computer output for a regression analysis relating Y (demand)
and X (unit price).

ANOVA
df SS
Regression XXXXXXXXXX
Residual XXXXXXXXXX
Total XXXXXXXXXX

Coefficients Standard E
or
Intercept XXXXXXXXXX
X XXXXXXXXXX


a. Determine whether or not demand and unit price are related. Use α = 0.05.
XXXXXXXXXX2 marks)
. Compute the coefficient of determination and fully interpret its meaning.
Be very specific. XXXXXXXXXX2 marks)
c. Compute the coefficient of co
elation and explain the relationship between
demand and unit price. XXXXXXXXXX2 marks)


Question 3 XXXXXXXXXX6 marks

The following are the results from a completely randomized design consisting of 3
treatments.



Source of Variation
Sum of
Squares
Degrees of
Freedom
Mean
Square

F
Between Treatments 390.58
Within Treatments (E
or XXXXXXXXXX
Total XXXXXXXXXX



Using α = .05, test to see if there is a significant difference among the means of the three
populations. The sample sizes for the three treatments are equal.















HI6007 T12018 Group Assignment Page 3



Question XXXXXXXXXXmarks

In order to determine whether or not the number of mobile phones sold per day (y) is related
to price (x1 in $1,000), and the number of advertising spots (x2), data were gathered for 7
days. Part of the Excel output is shown below.

ANOVA
df SS MS F
Regression XXXXXXXXXX
Residual XXXXXXXXXX

Coefficients Standard E
or
Intercept 0.8051
x XXXXXXXXXX
x XXXXXXXXXX

a.

a. Develop an estimated regression equation relating y to x1 and x2 XXXXXXXXXX2 marks)
b. At α = 0.05, test to determine if the estimated equation developed in Part a represents
a significant relationship between all the independent variables and the dependent variable.
Answered Same Day May 19, 2020 HI6007

Solution

Shakeel answered on May 24 2020
143 Votes
Ans 1
        Data    (a)    Class    frequency    relative frequency    percentage frequency    (b)
        136        0 - 50    0    0.00    0%
        281        50 - 100    0    0.00    0%
        226        100 - 150    3    0.06    6%
        123        150 - 200    15    0.30    30%
        178        200 - 250    14    0.28    28%
        445        250 - 300    6    0.12    12%
        231        300 - 350    4    0.08    8%
        389        350 - 400    3    0.06    6%
        196        400 - 450    3    0.06    6%
        175        450 - 500    2    0.04    4%
        211        Total    50
        162
        212
        241                            The shape fo the distribution is positively skewed.
        182
        290                        (c)    Median would be the most approprite measure of location for the given data set.
        434
        167
        246
        338
        194
        242
        368
        258
        323
        196
        183
        209
        198
        212
        277
        348
        173
        409
        264
        237
        490
        222
        472
        248
        231
        154
        166
        214
        311
        141
        159
        362
        189
        260
percentage frequency    0 - 50    50 - 100    100 - 150    150 - 200    200 - 250    250 - 300    300 - 350    350 - 400    400 - 450    450 - 500    0    0    0.06    0.3    0.28000000000000003    0.12    0.08    0.06    0.06    0.04    
Ans...
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