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To find the variance and standard deviation for the two distributions
An animal trainer obtained the following data (Table A) in a study of reaction times of dogs (in seconds) to a specific stimulus. He then selected another group of dogs (Table B) that were much older than the first group and measure their reaction times to the same stimulus.
Table A
Table B
Classes
Frequency
2.3-2.9
10
1
3.0-3.6
12
3
3.7-4.3
6
4
4.4-5.0
8
16
5.1-5.7
14
5.8-6.4
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.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
Illustrate what can we say about the probability distribution. Is it approximately normal, elucidate the mean and standard deviation.
Using the appropriate statistical procedure on the SPSS, test the between group means for a significant difference.
What is your conclusion regarding null hypothesis?
Give the Z- score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected
Answer the following three questions based on what you know about statistics now.
Determine a 95% confidence interval for the population mean.
Give three logically possible directions of casualty, indicating for each direction whether it is a reasonable explanation for the correlation in light of the variables involved (and why).
In a study of the consumer's view of the economy, the probability that a consumer would buy a house during the year was 0.0013, and the probability that the consumer would buy a car during the year was 0.198. There was also a 0.0100 probability t..
At the .05 significance level, is the number of units produced on the afternoon shift larger?
Would Kruskal-Wallis be the suitable statistical procedure to test this Research Question (RQ)? Describe your answer. When would you use Chi-Square test rather than One-Way Anova?
Woodco manufactures tables and chairs. Each table and chair must be made entirely out of oak or entirely out of pine. A total of 150 board feet of oak and 210 board feet of pine are available.
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