A scientist was interested in the success of a newly developed sleep aid called

Question

A scientist was interested in the success of a newly developed sleep aid called ‘Night Owl’ on time taken to fall asleep and quality of sleep. She recruited 30 participants who were randomly allocated to receive either a dose of Night Owl or a placebo. The scientist measured the mean time taken for each participant to fall asleep (minutes) and the quality of their sleep (measured on a scale of 1 (poorest quality) to 10 (best possible quality)) over the course of one week. What can the scientist conclude from the output below?

INTRCEPT: PILLIAI TRACE .944

LAMBADA .056

HOTELING TRACE 16,718

ROYS LARGEST OOT16.718

DRUG PILLAI TRACE .441

WILLS LAMBADA .559

HOTELING TRACE .789

ROYS LARGEST ROOT .789

A.The type of drug taken had a significant effect on both quality of sleep and time taken to get to sleep.

B.The type of drug taken had a small but significant effect on sleep.

C.Taking Night Owl resulted in less time taken to fall asleep and a significantly better quality of sleep than the placebo.

D.The type of drug taken had a significant

EFFECT VALUE F HYPOTHESIS DF ERROR DF SIG

INTRCEPT: PILLIAI TRACE .944

LAMBADA .056

HOTELING TRACE 16,718

ROYS LARGEST OOT16.718

. 225.69 2.00 27.000 .000

DRUG PILLAI TRACE .441

WILLS LAMBADA .559

HOTELING TRACE .789

ROYS LARGEST ROOT .789

10.650 2.00 27.000 .000

Explanation / Answer

Sol:

p=0.00

p<0.05

Reject Null Hypothesis

p=0.00

p<0.05

Reject Null Hypothesis

.The type of drug taken had a significant effect on both quality of sleep and time taken to get to sleep.

ANSWER A

A.The type of drug taken had a significant effect on both quality of sleep and time taken to get to sleep

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