Question
In: Statistics and Probability
The following data represent the 50 companies' percentage of revenues spent on research and development: 13.5...
The following data represent the 50 companies' percentage of revenues spent on research and development:
13.5 8.4 10.5 9.0 9.2 9.7 6.6 10.6 10.1 7.1
8.0 7.9 6.8 9.5 8.1 13.5 9.9 6.9 7.5 11.1
8.2 8.0 7.7 7.4 6.5 9.5 8.2 6.9 7.2 8.2
9.6 7.2 8.8 11.3 8.5 9.4 10.5 6.9 6.5 7.5
7.1 13.2 7.7 5.9 5.2 5.6 11.7 6.0 7.8 6.5
Construct a stem-and-leaf display.
Solutions
orchestra answered 2 years agoRelated Solutions
The following data give the percentage of women working in five companies in the retail and...
The following data give the percentage of women working in five
companies in the retail and trade industry. The percentage of
management jobs held by women in each company is also shown.
%Working
68
46
74
55
61
%Management
50
22
66
47
33
Develop the estimated regression equation by computing the
values b 0 and b 1.
Enter negative values as negative numbers. Round your answer for
the intercept to one decimal place, and your answer for the slope...
The following data represent soil water content (percentage of water by volume) for independent random samples...
The following data represent soil water content (percentage of
water by volume) for independent random samples of soil taken from
two experimental fields growing bell peppers. Soil water content
from field I: x1; n1 = 72 15.1 11.3 10.1 10.8 16.6 8.3 9.1 12.3 9.1
14.3 10.7 16.1 10.2 15.2 8.9 9.5 9.6 11.3 14.0 11.3 15.6 11.2 13.8
9.0 8.4 8.2 12.0 13.9 11.6 16.0 9.6 11.4 8.4 8.0 14.1 10.9 13.2
13.8 14.6 10.2 11.5 13.1 14.7 12.5...
The following data represent soil water content (percentage of water by volume) for independent random samples...
The following data represent soil water content (percentage of
water by volume) for independent random samples of soil taken from
two experimental fields growing bell peppers.
Soil water content from field I: x1; n1 = 72
15.2 11.3 10.1 10.8 16.6 8.3 9.1 12.3 9.1 14.3 10.7 16.1 10.2
15.2 8.9 9.5 9.6 11.3 14.0 11.3 15.6 11.2 13.8 9.0 8.4 8.2 12.0
13.9 11.6 16.0 9.6 11.4 8.4 8.0 14.1 10.9 13.2 13.8 14.6 10.2 11.5
13.1 14.7 12.5...
The following data represent soil water content (percentage of water by volume) for independent random samples...
The following data represent soil water content (percentage of
water by volume) for independent random samples of soil taken from
two experimental fields growing bell peppers. Soil water content
from field I: x1; n1 = 72 15.3 11.3 10.2 10.8 16.6 8.3 9.1 12.3 9.1
14.3 10.7 16.1 10.2 15.2 8.9 9.5 9.6 11.3 14.0 11.3 15.6 11.2 13.8
9.0 8.4 8.2 12.0 13.9 11.6 16.0 9.6 11.4 8.4 8.0 14.1 10.9 13.2
13.8 14.6 10.2 11.5 13.1 14.7 12.5...
4. The following data set represent the percentage of gold from two different locations: Location A...
4. The following data set represent the percentage of gold from
two different
locations:
Location A
23.6
22.4
18.9
29.8
22.7
25.4
17.5
14.2
29.4
26.1
24.1
22.3
Location B
5.0 6.1 2.3 2.1 7.8 9.2 4.1 2.5 4.2 9.9 1.0 1.2
b) Now consider the two locations as a single data set. What are
the mean and the standard deviation of the gold percentage for this
data set?
c) Using the empirical rule, determine what range of values
captures...
1. (15 pts) The following data show the percentage change in population for the 50 states...
1. (15 pts) The following data show the percentage change in
population for the 50 states and the District of Columbia from 2000
to 2009.
State
Percent Change
State
Percent Change
State
Percent Change
Alabama
5.9
Kentucky
6.7
North Dakota
0.7
Alaska
11.4
Louisiana
0.5
Ohio
1.7
Arizona
28.6
Maine
3.4
Oklahoma
6.9
Arkansas
8.1
Maryland
7.6
Oregon
11.8
California
9.1
Massachusetts
3.9
Pennsylvania
2.6
Colorado
16.8
Michigan
0.3
Rhode Island
0.5
Connecticut
3.3
Minnesota
7
South Carolina
13.7
Delaware...
The data below represent a firm’s dollars spent on advertising for a sample of 4 months...
The data below represent a firm’s dollars spent on advertising
for a sample of 4 months and the firm’s sales (in units sold) for
those months.
month
advertising expenditures (x)
units sold (y)
1
$2215
543
2
$2975
664
3
$2150
538
4
$2060
575
1. What is the correct interpretation of the coefficient of
determination?
2. What are expected sales if advertising spending is $3000?
3. What is the size of the error term for month 1?
4. Because...
A manufacturer of plastic products spent $2,400,000 during the course of 2004 on research and development....
A manufacturer of plastic products spent $2,400,000 during the
course of 2004 on research and development. $800,000 of this was
spent on an unsuccessful attempt to design new and cheaper moulds
which would have lasted twice as long as the moulds currently in
use; this proved impossible because the moulds would not sustain
the temperature of the molten plastic. $1,200,000 was spent on a
very successful project to enable the gnomes to be cast in a
cheaper form of plastic,...
The company X has spent total of $150,000 so far for research and development for this...
The company X has spent total of $150,000 so far for research
and development for this product A, and just paid another $100,000
to a consulting firm to do the marketing research. The consulting
firm has estimated that the product will have a very short life of
only 4 years.
It has also estimated that the annual sales volume will be
60,000 units and the selling price is $50 per unit. Further it has
predicted that the sales volume of...
What percentage of data would you predict would be between 25 and 50 and what percentage...
What percentage of data would you predict would be between 25
and 50 and what percentage would you predict would be more than 50
miles? Use the Week 4 spreadsheet again to find the percentage of
the data set we expect to have values between 25 and 50 as well as
for more than 50. Now determine the percentage of data points in
the dataset that fall within each of these ranges, using same
strategy as above for counting data...
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