Question
In: Statistics and Probability
The following table shows the price of a sample of new mobile homes (in thousands of...
The following table shows the price of a sample of new mobile homes (in thousands of dollars). Find a 95% confidence interval for the average price of a new mobile home.
24.4 30.6 26.4 26.8 33.5 32.2 32.4 13.9 24.4 29.3 26.2 14.1 21.4 20.0 33.0 17.6 24.8 27.0 22.8 18.8 35.1 26.7 22.1 37.2 31.9 24.0 28.4 15.8 29.3 31.4 22.8 8.4 24.7 16.6 31.1 13.9 16.8 29.5 17.0 9.9
Solutions
orchestra answered 2 years agoRelated Solutions
The average price for new mobile homes is known to be distributed with a population standard...
The average price for new mobile homes is known to be
distributed with a population standard deviation of 300. If a
random sample of 36 homes resulted in a sample mean of 55,000,
obtain a 90% confidence interval.
The accompanying table shows the annual salaries, in thousands of dollars, earned by a sample of...
The accompanying table shows the annual salaries, in thousands
of dollars, earned by a sample of individuals who graduated with
MBAs in the years 2012 and 2013. Perform a hypothesis test using α
equals= 0.05 to determine if the median salary for 2012 MBA
graduates is lower than 2013 MBA graduates.
Salaries (in thousands of dollars) for 2012 MBA graduates
92.6
66.1
60.6
85.5
92.8
44.7
84.4
81.1
44.2
94.3
66.6
61.6
94.6
81.6
Salaries (in thousands of dollars) for...
The average price for new mobile homes is known to be distributed with population standard deviation...
The average price for new mobile homes is known to be
distributed with population standard deviation of 300. If a random
sample of 36 homes resulted in a sample mean of 55, 000, obtain a
90% confidence interval.
The table shows the numbers of new-vehicle sales (in thousands) in the United States for Company...
The table shows the numbers of new-vehicle sales (in
thousands) in the United States for Company A and Company B for 10
years. The equation of the regression line is ModifyingAbove y with
caret equals 0.975 x plus 1 comma 259.19. Complete parts (a) and
(b) below. New-vehicle sales left parenthesis Company Upper A
right parenthesis comma x 4 comma 144 3 comma 880 3 comma 595 3
comma 443 3 comma 295 3 comma 110 2 comma 849 2...
Following table shows the probability distribution for the number of bathrooms for homes sold in the...
Following table shows the probability distribution for the
number of bathrooms for homes sold in the Goodyear, Arizona.
Number of baths (X)
Count
1.5
16
2.0
65
2.5
15
3.0
9
Total
105
Compute the mean and the standard deviation of this
distribution.
According to the census bureau publication: current construction reports, the mean price of new mobile homes...
According to the census bureau publication: current construction
reports, the mean price of new mobile homes is 63,500. The standard
deviation of the prices is 5,500.
a). For samples 100 new mobile homes, determine the mean and
standard deviation of all possible sample mean prices (hint: find
u-x and o-x)
b). Repeat part a for samples of size 200
House prices: The following table presents prices, in thousands of dollars, of single-family homes for 20...
House prices: The following table presents
prices, in thousands of dollars, of single-family homes for 20 of
the 25 largest metropolitan areas in the United States for the
third quarter of 2012 and the third quarter of 2013.
Metro Area
2012
2013
Metro Area
2012
2013
Atlanta, GA
87.8
115.1
Philadelphia, PA
193.5
197.7
Baltimore, MD
218.1
226.5
Phoenix, AZ
129.9
169.0
Boston, MA
311.5
332.2
Portland, OR
208.6
246.5
Chicago, IL
157.2
159.4
Riverside, CA
174.3
216.7
Cincinnati, OH...
Suppose the following table shows the forecast for the number of people (in thousands) who have...
Suppose the following table shows the forecast for the number of
people (in thousands) who have two or more jobs in the United
States.
Date Jobs Forecast
May 2013 6,798 6,158
June 2013 6,346 6,529
July 2013 6,843 6,701
August 2013 6,651 6,779
Calculate the RMSE (root mean squared error). Take all
calculations and the final answer to three decimal places.
The following table shows the quarterly demand in thousands of cases, for a national beer distributor...
The following table shows the
quarterly demand in thousands of cases, for a national beer
distributor over the past four years. This data is also available
in an Excel spreadsheet on Blackboard.
Year
Quarter
2015
2016
2017
2018
1
280
321
419
266
2
485
493
502
510
3
423
515
487
501
4
330
271
468
516
Forecast the demand for each quarter
of 2019 by using the multiplicative decomposition model and using
overall average to calculate seasonal...
The following table shows the quarterly demand in thousands of cases, for a national beer distributor...
The following table shows the
quarterly demand in thousands of cases, for a national beer
distributor over the past four years. This data is also available
in an Excel spreadsheet on Blackboard.
Year
Quarter
2015
2016
2017
2018
1
280
321
419
266
2
485
493
502
510
3
423
515
487
501
4
330
271
468
516
Using
a smoothing coefficient of a = 0.3, exponentially smooth the
series. Assume an initial forecast for the first quarter of...
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