Question
1 20.8 1 20.4 1 25.1 1 27.4 1 15.4 1 15.3 1 13.9 2 16.3...
1 20.8 1 20.4 1 25.1 1 27.4 1 15.4 1 15.3 1 13.9 2 16.3 2 14.5 2 10.4 2 12.2 2 12.5 2 9.5 2 15.3 3 16.8 3 20.9 3 28.4 3 22.5 3 17.5 3 14.9 3 22.4 3 17.5 3 25.4 3 22.4 4 16.7 4 14.5 4 13.7 4 15.4 4 12.4 4 16 4 7.5 4 12.9 4 18.310.
What was the margin of error for the confidence interval for gasoline mileage of make 2?
What is the value of the t test statistic for testing the hypothesis that makes 2 and 3 do not differ in mileage?
Homework Answers
Answer #1
Excel output:
| 1 | 20.8 | 2 | 16.3 | 3 | 16.8 | 4 | 16.7 |
| 1 | 20.4 | 2 | 14.5 | 3 | 20.9 | 4 | 14.5 |
| 1 | 25.1 | 2 | 10.4 | 3 | 28.4 | 4 | 13.7 |
| 1 | 27.4 | 2 | 12.2 | 3 | 22.5 | 4 | 15.4 |
| 1 | 15.4 | 2 | 12.5 | 3 | 17.5 | 4 | 12.4 |
| 1 | 15.3 | 2 | 9.5 | 3 | 14.9 | 4 | 16 |
| 1 | 13.9 | 2 | 15.3 | 3 | 22.4 | 4 | 7.5 |
| 3 | 17.5 | 4 | 12.9 | ||||
| 3 | 25.4 | 4 | 18.31 | ||||
| 3 | 22.4 | ||||||
| Mean 2 | AVERAGE(D1:D7) | 12.95714 | Mean 3 | 20.87 | |||
| sd 2 | STDEV(D1:D7) | 2.527091 | sd 3 | 4.209526 |
1.
Margin of error for the 95% confidence interval for gasoline mileage is,
2.
Hypothesis:
Test statistic,
where,
Not the answer you're looking for?
Similar Questions
1 20.8 1 20.4 1 25.1 1 27.4 1 15.4 1 15.3 1 13.9 2 16.3...
1
20.8
1
20.4
1
25.1
1
27.4
1
15.4
1
15.3
1
13.9
2
16.3
2
14.5
2
10.4
2
12.2
2
12.5
2
9.5
2
15.3
3
16.8
3
20.9
3
28.4
3
22.5
3
17.5
3
14.9
3
22.4
3
17.5
3
25.4
3
22.4
4
16.7
4
14.5
4
13.7
4
15.4
4
12.4
4
16
4
7.5
4
12.9
4
18.3
10. What was the margin of error for the confidence interval
for gasoline mileage...
1 20.8 1 20.4 1 25.1 1 27.4 1 15.4 1 15.3 1 13.9 2 16.3...
1
20.8
1
20.4
1
25.1
1
27.4
1
15.4
1
15.3
1
13.9
2
16.3
2
14.5
2
10.4
2
12.2
2
12.5
2
9.5
2
15.3
3
16.8
3
20.9
3
28.4
3
22.5
3
17.5
3
14.9
3
22.4
3
17.5
3
25.4
3
22.4
4
16.7
4
14.5
4
13.7
4
15.4
4
12.4
4
16
4
7.5
4
12.9
4
18.3
nCalculate a 95% confidence interval for the mean mileage of
make 2. Use the...
The cost of electricity (in $) was recorded for a random sample of 50 cities in...
The cost of electricity (in $) was recorded for a random sample
of 50 cities in a country. These data are as follows:
9.0
9.0
9.5
9.6
10.2
10.8
10.9
11.1
11.4
11.6
11.9
12.3
12.7
12.8
12.9
13.0
13.0
13.5
13.7
13.9
14.1
14.3
14.4
14.7
14.8
14.8
14.9
14.9
15.0
15.1
15.3
15.4
15.7
16.3
16.5
16.6
16.7
16.8
17.1
17.2
17.5
17.8
18.3
18.5
18.7
19.1
19.7
20.2
20.6
21.3
A “less than” frequency distribution is constructed...
Zoologists studied the characteristics of the burrow systems of a subterranean rodent. A sample of 51...
Zoologists studied the characteristics of the burrow systems of
a subterranean rodent. A sample of 51 burrows had their depths,
in centimeters, recorded in the following table. 15.8, 15.9, 18.9,
18.4, 13.6, 15.6, 14.6, 12.2, 11.1, 12.9, 17.1, 16.3, 16.5, 16.3,
12.0, 14.4, 15.4, 13.1, 17.3, 12.2, 18.9, 16.1, 13.2, 14.9, 14.3,
12.6, 11.2, 16.7, 17.6, 8.1, 19.3, 17.5, 15.3, 15.6, 19.7, 14.3,
12.9, 12.8, 13.7, 16.3, 17.7, 13.8, 14.1, 16.6, 11.7, 15.9, 16.8,
9.2, 15.4, 18.2, 14.4.
Find and...
The CDC publishes charts on Body Mass Index (BMI) for boys and girls of different ages....
The CDC publishes charts on Body Mass Index (BMI) for boys and
girls of different ages. Based on the chart for girls, the mean BMI
for 6-year-old girls is listed as 15.8 kg/m2. The data from which
the CDC charts were developed is old and there is concern that the
mean BMI for 6 year olds girls has increased.
The BMI’s from a current random sample of 50 6-year-old girls is
attached in a list on the next page. Use...
BODYFAT HEIGHT 12.9 67.75 6 72.25 25.5 66.25 10.6 72.25 28.1 71.25 20 74.75 19.2 69.75...
BODYFAT
HEIGHT
12.9
67.75
6
72.25
25.5
66.25
10.6
72.25
28.1
71.25
20
74.75
19.2
69.75
11.9
72.5
4.3
74
12.9
73.5
7.6
74.5
8.3
76
20.4
69.5
19.8
71.25
22.2
69.5
20.9
66
28
71
23
71
15.6
67.75
16.9
73.5
18.5
68
15.5
69.75
14.7
68.25
18
70
13.6
67.75
4.3
71.5
8
67.5
22.4
67.5
4.4
64.75
8.9
69
13.2
73.75
6.3
71.25
12.6
71.25
21
71
31.9
73.5
39.1
65
23.2
70
26.6
68.25
34.3
72.25...
Are cigarettes bad for people? Cigarette smoking involves tar, carbon monoxide, and nicotine (measured in milligrams)....
Are cigarettes bad for people? Cigarette smoking involves tar,
carbon monoxide, and nicotine (measured in milligrams). The first
two are definitely not good for a person's health, and the last
ingredient can cause addiction.
Brand
Tar
Nicotine
CO
Brand
Tar
Nicotine
CO
Alpine
Benson & Hedges
Bull Durham
Camel Lights
Carlton
Chesterfield
Golden Lights
Kent
Kool
L&M
Lark Lights
Marlboro
Merit
14.1
16.0
29.8
8.0
4.1
15.0
8.8
12.4
16.6
14.9
13.7
15.1
7.8
0.86
1.06
2.03
0.67
0.40
1.04...
3. Should the CBC hire stars for their movies? To answer this question, run a hypothesis...
3. Should the CBC hire stars for their movies? To answer this
question, run a hypothesis test to see if there is a significant
difference between the ratings of movies with stars versus movies
without stars. Use the data for CBC movies only. Use 95%
confidence. Answer the following: a. What are the null and
alternative hypotheses (state in full sentences)? b. Run the test
using Excel and include the output table. Use a t-test assuming
equal variances. c. What...
Part C: Regression and Correlation Analysis Use the dependent variable (labeled Y) and the independent variables...
Part C: Regression and Correlation Analysis
Use the dependent variable (labeled Y) and the independent
variables (labeled X1, X2, and X3) in the data file. Use Excel to
perform the regression and correlation analysis to answer the
following.
Generate a scatterplot for the specified dependent variable (Y)
and the X1 independent variable, including the graph of the "best
fit" line. Interpret.
Determine the equation of the "best fit" line, which describes
the relationship between the dependent variable and the selected...
Use the dependent variable (labeled Y) and the independent variables (labeled X1, X2, and X3) in...
Use the dependent variable (labeled Y) and the independent
variables (labeled X1, X2, and X3) in the data file. Use Excel to
perform the regression and correlation analysis to answer the
following.
Generate a scatterplot for the specified dependent variable (Y)
and the X1 independent variable, including the graph of the "best
fit" line. Interpret.
Determine the equation of the "best fit" line, which describes
the relationship between the dependent variable and the selected
independent variable.
Determine the coefficient of...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 18 minutes ago
asked 27 minutes ago
asked 38 minutes ago
asked 38 minutes ago
asked 40 minutes ago
asked 46 minutes ago
asked 55 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago