Professor gosling wants to examine the effect of caffeine, Ask an Expert

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Professor Gosling wants to examine the effect of caffeine on depression. His research hypothesis is that a moderate dose (25 mg) of caffeine will lower depression scores on a psychological test when compared with no caffeine (placebo).

The null hypothesis is that:

a. depression scores with a moderate dose (25 mg) of caffeine = depression scores with no caffeine

b.depression scores with a moderate dose (25 mg) of caffeine > depression scores with no caffeine

c. depression scores with a moderate dose (25 mg) of caffeine >= depression scores with no caffeine

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M93093738

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