An animal trainer obtained the following sample data (Table A) in a study of reaction times of dogs (in seconds) to a specific stimulus. He then selected another group of dogs that were much older than the first group and measure their reaction times to the same stimulus. The sample data is shown in Table B.
Table A Table B Classes
Frequency
Classes Frequency Classes Frequency
2.3-2.9 35
2.3-2.9 30
3.0-3.6 23 3.0-3.6 26
3.7-4.3 5 3.7-4.3 26
4.4-5.0 4 4.4-5.0 1
5.1-5.7 24 5.1-5.7 6
5.8-6.4 15 5.8-6.4 28
Find the variance and standard deviation for the two distributions above. Compare the variation of the data sets. Decide if one data set is more variable than the other.
You are given the following data. Number of Absences Final
Grade
0 96
1 92
2 71
2 71
3 78
3 66
4 60
5 51
6 42
?Make a scatter plot for the data; submit it through the Dropbox.
?Find the correlation coefficient for the data.
?Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
I just need help plotting on the graph.
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An animal trainer obtained the following sample data (Table A) in a study of reaction times of dogs (in seconds) to a specific stimulus. He then selected another group of dogs that were much older than the first group and measure their reaction times to the same stimulus. The sample data is shown in Table B.
Table A Table B
Classes Frequency ...
Solution Summary
Reaction time for groups of dogs in statistics is examined.
1. For each of the following, note whether the distribution is symmetrical, negatively skewed, or positively skewed.
a. Mean = 14, mode = 25, median = 19
b. Mean = 50, mode = 50, median = 50
c. Mean = 225.8, mode = 184, median = 199
2. A math test was given with the following results:
80, 69, 92, 75, 88, 37, 98, 92,
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HERE ARE THE DIRECTIONS:
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In a standard test forreactiontime, female candidates for flight school are found to have times that are normally distributed with a mean of 0.65 seconds and a standard deviation of 0.15 seconds.
If one candidate is randomly selected, find the probability that her reactiontime is below the maximum allowable time of 1.00se
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See the attached file.
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