Question
In: Statistics and Probability
1- Test the hypothesis that there is a significant difference between the number of hours older...
1- Test the hypothesis that there is a significant difference between the number of hours older (60 or more) versus younger people watch T.V. Alpha is 05
a) State the assumptions
b) State the null and alternate hypotheses
c) explain your decision to reject or not reject and formulate your conclusion (Alpha is .05) Show your work.
d) what is the mean difference between the two groups?
e) what are the lower and upper 95% confidence intervals?
f) which group watch more tv? please explain your answer.
Group Statistics
HOURS PER DAY WATCHING TV
| Recorded Age | N | Mean | Standard Deviation | Standard Error Mean | |
| 1 (Young Group) | 944 | 2.81 | 2.640 | .086 | |
| 2 (Older group) | 354 | 3.82 | 3.288 | .175 | |
Independent Sample Test
(***NOTE**: To answer some of your questions just look at the second row of this table "Equal variance not assumed")
HOURS PER DAY WATCHING TV
| F | Sig( P-value) | T (obtained) | Df (Mean) | Sig (2 Tailed) | Mean Difference | Standard Error Diference |
95% Confidence Interval of the difference Lower |
95% Confidence Interval of the difference Upper |
||
| Equal Variances Assumed | 5.689 | .017 | -5.694 | 1296 | .000 | -1.005 | .176 | -1.351 | -.658 | |
| Equal Variances Not Assumed | -5.159 | 532.599 | .000 | -1.05 | .195 | -1.387 | -.622 | |||
Solutions
orchestra answered 2 years agoRelated Solutions
To test for any significant difference in the mean number of hours between breakdowns for four...
To test for any significant difference in the mean number of
hours between breakdowns for four machines, the following data were
obtained.
Machine 1
Machine 2
Machine 3
Machine 4
6.4
8.7
11.1
9.9
7.8
7.4
10.3
12.8
5.3
9.4
9.7
12.1
7.4
10.1
10.3
10.8
8.4
9.2
9.2
11.3
7.3
9.8
8.8
11.5
The mean times between breakdowns are 7.1, 9.1, 9.9 and 11.4
hours respectively. In the analysis of variance, MSTR = 19.26 and
MSE = .97. Use...
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.5
9.0
11.0
9.7
7.9
7.8
10.2
12.7
5.4
9.8
9.6
12.1
7.6
10.4
10.4
10.8
8.7
9.5
9.2
11.3
7.7
9.9
9.0
11.2
(a)
At the α = 0.05 level of significance, what is the
difference, if any, in the population mean times among the four
machines?
State the null...
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.6
8.6
10.9
9.7
8.0
7.4
10.3
12.7
5.5
9.5
9.7
11.9
7.7
10.0
10.2
10.6
8.7
9.3
9.1
11.1
7.9
9.8
8.6
11.2
Use Fisher's LSD procedure to test for the equality of the means
for machines 2 and 4. Use a 0.05 level of significance.
Find the value of...
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.5
8.9
10.7
9.9
7.8
7.7
10.0
12.9
5.4
9.6
9.4
12.0
7.5
10.2
10.0
10.7
8.4
9.5
8.9
11.2
7.6
9.9
8.6
11.7
(a)
At the α = 0.05 level of significance, what is the
difference, if any, in the population mean times among the four
machines?
State the null...
To test for any significant difference in the number of hours between breakdowns for three machines,...
To test for any significant difference in the number of hours
between breakdowns for three machines, the following dataset was
obtained:
Machine 1
Machine 2
Machine 3
6.4
8.7
9.9
7.4
10.3
12.8
12.1
9.2
7.3
8.4
7.4
8.8
Choose ALL appropriate pairs of hypotheses that you would use to
perform this test:
A.
B.
C.
D.
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.7
8.8
10.8
9.6
7.9
7.6
10.2
12.6
5.6
9.5
9.6
11.9
7.5
10.2
10.1
10.5
8.6
9.4
8.9
11.2
7.5
10.3
8.6
11.4
Find the value of the test statistic. (Round your answer to two
decimal places.)___
Use Fisher's LSD procedure to test for the equality of the means
for...
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.6
9.0
10.8
9.8
8.2
7.6
10.2
12.7
5.5
9.7
9.6
12.1
7.6
10.3
10.2
10.7
8.8
9.6
9.0
11.2
7.7
10.2
8.4
11.9
(a)
At the α = 0.05 level of significance, what is the
difference, if any, in the population mean times among the four
machines?
State the null...
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.5
9.1
10.7
9.7
8.1
7.6
10.1
12.4
5.6
9.8
9.3
11.9
7.6
10.3
9.9
10.5
8.5
9.4
8.8
11.1
7.5
10.2
8.8
11.0
(a) At the α = 0.05 level of significance, what is the
difference, if any, in the population mean times among the four
machines?
State the null...
To test for any significant difference in the number of hours between breakdowns for four machines,...
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.6
8.6
10.9
9.7
8.0
7.4
10.3
12.7
5.5
9.5
9.7
11.9
7.7
10.0
10.2
10.6
8.7
9.3
9.1
11.1
7.9
9.8
8.6
11.2
Find the value of the test statistic. (Round your answer to two
decimal places.)
______________.
Find the p-value. (Round your answer to three decimal
places.)
p-value =...
To test for any significant difference in the number of hours between breakdowns for four machines, the following data were obtained.
You may need to use the appropriate technology to answer this
question.
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
You may need to use the appropriate technology to answer this
question.
To test for any significant difference in the number of hours
between breakdowns for four machines, the following data were
obtained.
Machine
1
Machine
2
Machine
3
Machine
4
6.5
8.7
11.0
9.8
8.0
7.6...
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