Question
In: Statistics and Probability
A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected and their...
A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected and their competition scores were recorded before and after the training. The results are shown below. Use a 0.01 significance level to test the claim that the training technique is effective in rising the gymnasts’ scores.
|
Subject |
A |
B |
C |
D |
E |
F |
G |
|
Before |
9.6 |
9.7 |
9.7 |
9.1 |
9.7 |
9.2 |
9.1 |
|
After |
9.7 |
9.9 |
9.7 |
9.3 |
9.8 |
9.8 |
9.3 |
Solutions
Expert Solution
(5) Conclusion
It is concluded that the null hypothesis Ho is not rejected. Therefore, there is not enough evidence to claim that the the training technique is effective in rising the gymnasts’ scores, at the 0.01 significance level.
orchestra answered 1 year agoRelated Solutions
A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected and their...
A coach uses a new technique to train gymnasts. 7
gymnasts were randomly selected and their competition scores were
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below
Subject A B
C D E F
G
Before 9.6 9.7 9.7 9.4 9.7 9.5 9.5
After 9.7 9.9 9.7 9.3 9.8 9.8
9.3
Using a 0.01 level of significance, test the claim that the
training technique is effective in raising the gymnasts’...
A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected and their...
A coach uses a new technique to train gymnasts. 7 gymnasts were
randomly selected and their competition scores were recorded before
and after the training. The results are shown below
Subject
A
B
C
D
E
F
G
Before
9.6
9.7
9.7
9.4
9.7
9.5
9.5
After
9.7
9.9
9.7
9.3
9.8
9.8
9.3
Using a 0.01 level of significance,
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Use the traditional method of
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Question #4 A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected...
Question #4
A coach uses a new technique to train gymnasts. 7 gymnasts were
randomly selected and their competition scores were recorded before
and after the training. The results are shown below.
Before
9.4
9.0
9.2
9.4
9.2
9.3
9.7
After
9.5
9.3
9.5
9.6
9.4
9.5
9.9
Using a 0.10 level of significance and Critical Value method to
test the claim that the training technique is effective in raising
the gymnasts' scores. (Mean difference is less than zero)
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A coach uses a new technique in training middle distance
runners. The times for 9 randomly selected, independent athletes to
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Assume the distribution of differences are normally distributed
Before 115.2 120.9 108.0 112.4 107.5 119.1 121.3 110.8 122.3
After 116.0 119.1 105.1 111.9 109.1 115.1 118.5 110.7 120.9
Build and Interpret 90% confidence interval for the true mean
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Runner
Monday time
Fridays time
1
26.2
25.8
2
25.2
24.9
3
24.8
24.9
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24.1
24.6
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25.9
25.2
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