In an experiment on the effect of caffeine on time to complete a manual task,Paolo has three treatments-0 mg,150 mg,and 300 mg of caffeine.He randomly assigns an equal number of 39 participants to his 3 conditions.If he calculates , and ,what is his ?
A)5.90
B)27.95
C)30.90
D)2.95

Question

In an experiment on the effect of caffeine on time to complete a manual task,Paolo has three treatments-0 mg,150 mg,and 300 mg of caffeine.He randomly assigns an equal number of 39 participants to his 3 conditions.If he calculates  ,  and  ,what is his  ?
A)5.90 
B)27.95 
C)30.90 
D)2.95

Quizplus · Accepted Answer

Since Paolo has 3 treatments and 39 participants, there are 13 participants in each treatment group. He calculates the mean time to complete the task for each group:

- Treatment 0 mg: 11eaab01_abb6_0126_acdb_55de8ba8639e_TB4035_00 
- Treatment 150 mg: 11eaab01_abb6_2837_acdb_1918a84e80ae_TB4035_00
- Treatment 300 mg: 11eaab01_abb6_2838_acdb_0babb53d4230_TB4035_00

To test whether there is a significant effect of caffeine on time to complete the task, Paolo could use a one-way ANOVA. However, the question asks for his 11eaab01_abb6_2839_acdb_cf2a71270e6e_TB4035_00 , which is not specified. We cannot determine the correct answer with the given information.

In an Experiment on the Effect of Caffeine on Time