Business Statistics: A First Course (8th Edition)
8th Edition
ISBN: 9780135177785
Author: David M. Levine, Kathryn A. Szabat, David F. Stephan
Publisher: PEARSON
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Overweight or obese adults from psychiatric programs were recruited and randomly assigned to a treatment group or control group. Patients in the treatment
group received both weight-management sessions plus exercise sessions plus their usual care. Patients in the control group received their usual treatment for
mental illness and no additional treatment. After 18 months, some of the patients had lost 5% or more of their weight, and some had not. The table summarizes
the data. Complete parts (a) and (b) below.
Treatment Group
Control Group
Lost 5% or more
46
29
Did not lose 5% or more
88
106
.....
(a) Find the percentage of each group that lost 5% or more, and compare them descriptively. That is, report both percentages, and indicate what these sample
percentages suggest about the effectiveness of the treatment program.
Of the treatment group,% of them lost 5% or more. (Round to one decimal place as needed.)
Of the control group,
% of them lost 5% or more. (Round to one decimal place as…
A survey was conducted to determine the impact of contamination on property values. Home owners were randomly selected from each of seven states-A, B, C, D, E, F, and G. Each homeowner was
asked to estimate the property value of a home located in an area contaminated by a certain substance. The dependent variable of interest was the substance discount percentage (the difference
between the current home value and the estimated value after contamination, as a percentage). The researchers were interested in comparing the mean substance discount percentages across the
seven states. Complete parts a and b.
...
O D. Ho: H1 H2 # H3 # H4 # H5 # H6 # H7
Ha: At least two treatment means are equal
b. An ANOVA summary table is shown to the right. Use
the information provided to conduct the hypothesis test,
part a. Use oa= 0.05.
Source
df
MS
F-value p-value
States
6 0.1236
0.0206
1.65
0.150
Error
59 0.7372
0.0125
Total
65 0.8608
What is the rejection region? Select the correct choice below and fill…
Resorts & Spas, a magazine devoted to upscale vacations and accommodations, published its Reader's Choice List of the top 20 independent beachfront boutique hotels in the world. The data shown are the scores received by these hotels based on the results from Resorts & Spas' annual Readers' Choice Survey. Each score represents the percentage of respondents who rated a hotel as excellent or very good on one of three criteria (comfort, amenities, and in-house dining). An overall score was also reported and used to rank the hotels.
Determine the estimated multiple linear regression equation that can be used to predict the overall score given the scores for comfort, amenities, and in-house dining.Let x1 represent Comfort.Let x2 represent Amenities.Let x3 represent In-House Dining.
Hotel
Overall
Comfort
Amenities
In-House Dining
Muri Beach Odyssey
94.3
94.5
90.8
97.7
Pattaya Resort
92.9
96.6
84.1
96.6
Sojourner’s Respite
92.5
99.9
100.0
88.4
Spa Carribe
91.2
88.5
94.7…
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