Question

The next two questions (23 and 24) refer to the following: We conduct an experiment to compare the responses to five different treatments. Volunteers are randomly assigned to receive one of the five treatments. Each treatment is assigned to the same number of individuals. The response variable is measured for each individual and an analysis of variance F test is conducted to assess the equality of the means for the five treatments. Responses for each of the five treatments are known to follow normal distributions with common standard deviation. The ANOVA table (with some values missing) is shown below: Source of Variation df Sum of Squares Mean Squares F Groups 74.52 Error 60 5.78 Total 23. How many individuals received each of the five treatments? (A) 11 (B) 12 (C) 13 (D) 14 (E) 15 24. One assumption required in conducting an ANOVA F test is that all population standard deviations are equal. The estimate of this common population standard deviation is: (A) 2.40 (B) 4.32 (C) 5.78 (D) 18.63 (E) 33.41

          The next two questions (23 and 24) refer to the following:
We conduct an experiment to compare the responses to five different treatments. Volunteers are randomly assigned to receive one of the five treatments. Each treatment is assigned to the same number of individuals. The response variable is measured for each individual and an analysis of variance F test is conducted to assess the equality of the means for the five treatments. Responses for each of the five treatments are known to follow normal distributions with common standard deviation. The ANOVA table (with some values missing) is shown below:

Source of Variation df Sum of Squares Mean Squares F
Groups 74.52
Error 60 5.78
Total

23. How many individuals received each of the five treatments?
(A) 11 (B) 12 (C) 13 (D) 14 (E) 15

24. One assumption required in conducting an ANOVA F test is that all population standard deviations are equal. The estimate of this common population standard deviation is:
(A) 2.40 (B) 4.32 (C) 5.78 (D) 18.63 (E) 33.41

The next two questions (23 and 24) refer to the following:
We conduct an experiment to compare the responses to five different treatments. Volunteers are randomly assigned to receive one of the five treatments. Each treatment is assigned to the same number of individuals. The response variable is measured for each individual and an analysis of variance F test is conducted to assess the equality of the means for the five treatments. Responses for each of the five treatments are known to follow normal distributions with common standard deviation. The ANOVA table (with some values missing) is shown below:

Source of Variation df Sum of Squares Mean Squares F
Groups 74.52
Error 60 5.78
Total

23. How many individuals received each of the five treatments?
(A) 11 (B) 12 (C) 13 (D) 14 (E) 15

24. One assumption required in conducting an ANOVA F test is that all population standard deviations are equal. The estimate of this common population standard deviation is:
(A) 2.40 (B) 4.32 (C) 5.78 (D) 18.63 (E) 33.41

Added by Andrew M.

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