Basic Business Statistics, Student Value Edition (13th Edition)
13th Edition
ISBN: 9780321946393
Author: Mark L. Berenson, David M. Levine, Kathryn A. Szabat
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 25PS
A study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes. What is the
a. between 25 and 30 minutes?
b. less than 35 minutes?
c. What are the mean and standard deviation of the shopping time?
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Use technology to find (a) the multiple regression equation for the data shown in the accompanying table, (b) the standard error estimate and interpret the result, and (c) the coefficient of
determination and interpret the result.
The accompanying table shows the total square footages (in billions) of retailing space at shopping centers, the numbers (in thousands) of shopping centers, and the sales (in billions of dollars) for
shopping centers for eight years.
Click the icon to view the data table on shopping center sales.
(a) What is the regression equation?
ŷ = 1 + ( )×₁ + (1)×2
(Round to two decimal places as needed.)
(b) The standard error is ☐
(Round to two decimal places as needed.)
Interpret the standard error. Choose the correct answer below.
Shopping center sales
Sales, y
Total square footage, X₁
Shopping centers, X2
123.4 211.5 385.6 475.5 641.3 716.5 768.2 806.8 851.7 893.9 933.7
1.3 2.8 3.3 3.7 4.1 4.6 4.7 4.8 4.9 5.0 5.1
13.6 17.3 22.2 25.5 32.8 38.0 39.1 39.2 40.5 41.2…
Not use ai please
Find the regression equation.
Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the
regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours 6 students spent for a test and their scores on that test are shown below.
Hours spent studying, x
Test score, y
0
2
2
4
5
6
39
45
51
49
63
68
(a) x = 2 hours
(c) x = 12 hours
(b) x = 2.5 hours
(d) x 3.5 hours
y = x + (D
☐ x + (☐
(Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.)
Choose the correct graph below.
A.
B.
Test score
0
80-
0
Π
8
Test score
80-
0-
0
Hours studying
Hours studying
(a) Predict the value of y for x = 2. Choose the correct answer below.
A. 47.2
B. 49.5
C. 54.0
D. not meaningful
(b) Predict the value of y for x = 2.5. Choose the correct answer below.
A. 54.0
B. 49.5
C.…
Chapter 6 Solutions
Basic Business Statistics, Student Value Edition (13th Edition)
Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a standard normal distribution (with a mean...Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a normal distribution with =100 and =10,...Ch. 6 - Given a normal distribution with =50 and =4, what...Ch. 6 - Prob. 7PSCh. 6 - Toby’s Trucking Company determined that the...Ch. 6 - Prob. 9PSCh. 6 - A Set of final examination grades in an...
Ch. 6 - Prob. 11PSCh. 6 - In 2012, the per capita consumption of soft drinks...Ch. 6 - Many manufacturing problems involve the matching...Ch. 6 - Show that for a sample of n=39, the smallest and...Ch. 6 - For a sample of n=6, list the six Z values.Ch. 6 - Prob. 16PSCh. 6 - Prob. 17PSCh. 6 - The file Property Taxes contains the property...Ch. 6 - Prob. 19PSCh. 6 - One operation of a mill is to cut pieces of steel...Ch. 6 - Prob. 21PSCh. 6 - The file Utility contains the electricity costs,...Ch. 6 - Suppose you select one value from a uniform...Ch. 6 - The time between arrivals of customer at a bank...Ch. 6 - A study of the time spent shopping in a...Ch. 6 - How long does it take to download a two-hour movie...Ch. 6 - The Scheduled commuting time on the Long Island...Ch. 6 - Prob. 28PSCh. 6 - Prob. 29PSCh. 6 - Prob. 30PSCh. 6 - Autos arrive at a toll plaza located at the...Ch. 6 - Prob. 32PSCh. 6 - Prob. 33PSCh. 6 - Prob. 34PSCh. 6 - The time between unplanned shutdowns of a power...Ch. 6 - Golfers arrive at the starter's booth of a public...Ch. 6 - Prob. 37PSCh. 6 - Prob. 38PSCh. 6 - Prob. 39PSCh. 6 - Prob. 40PSCh. 6 - Prob. 41PSCh. 6 - Prob. 42PSCh. 6 - Prob. 43PSCh. 6 - Prob. 44PSCh. 6 - An industrial sewing machine uses ball bearing...Ch. 6 - The fill amount in 2-liter soft drink bottles is...Ch. 6 - In an effort to reduce the number of bottles that...Ch. 6 - Prob. 48PSCh. 6 - The file DomesticBeer contains the percentage...Ch. 6 - Prob. 50PSCh. 6 - Prob. 51PSCh. 6 - Prob. 52PSCh. 6 - Prob. 53PS
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In a random sample of 600 adults in that country in a recent year, 25% say they are concerned that their taxes will be audited. At a = 0.10, is there enough evidence to reject the center's claim? Complete parts (a) through (d) below. ... (a) Identify the claim and state Ho and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At least B. Less than % of adults in the country think that their taxes will be audited. % of adults in the country think that their taxes will be audited. C. The percentage of adults in the country who think that their taxes will be audited is not %. D. % of adults in the country think that their taxes will be audited. 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