Question

In: Statistics and Probability

"sleep latency time in minutes" CBT melatonin control 7 12 27 9 11 31 5 14...

"sleep latency time in minutes"

CBT

melatonin

control

7

12

27

9

11

31

5

14

32

9

12

22

8

11

37

7

13

24

9

14

39

10

13

42

9

14

25

6

14

39

Interpret the results of this study.

Which treatment had the best results?

Which treatment had the weakest results?

What should the alternative and null hypothesis be?

Write conclusions and results.

Solutions

Expert Solution

Considering three tyes of treatments CBT, Melatonin and Control. If each row shows the Slee latency for a particular experiments, then average can be a indicator of quality of treatment.

A sleep latency of 15 to 20 minute is good indicator treatment.

CBT

melatonin

control

7

12

27

9

11

31

5

14

32

9

12

22

8

11

37

7

13

24

9

14

39

10

13

42

9

14

25

6

14

39

Minutes

Sleepiness

0–5

Severe

5–10

Troublesome

10–15

Manageable

15–20

Excellent


Average Sleep Latency of CBT=7.9

Average Sleep Latency of Melatonin=12.8

Average Sleep Latency of Control=31.8

Which treatment had the best results?Which treatment had the weakest results?

Melatonin is the best treament as its has average sleep time 12.8 which close to standard range of 15 to 20 while CBT is weakest as lts has lowest sleep latency score.

Null Hypothesis is H0= Average >15

Aletenative is H1=Average <15


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