A researcher is tests the effect of stress on the tail suspension test. The foll

Question

A researcher is tests the effect of stress on the tail suspension test. The following data set shows the percentage of time that a mouse is immobile in a tail suspension test.

a) State the null hypothesis (1 mark)

b) What is the mean score for each condition? (1 mark)

c) What is the median score in each condition? (1 mark)

d) What is the mode? (1 mark)

e) The outcome of the experiment yielded a p-value of p=0.68. What is the probability that there is no difference between non-stressed and stressed mice? (1 mark)

non stressed mouse %immobility Stressed mouse % immoblility A 40 K 53 B 43 L 35 C 45 M 40 D 48 N 35 E 43 O 42 F 47 P 52 G 48 Q 50 H 48 R 44 I 33 S 50 J 45 T 50

Explanation / Answer

a) State the null hypothesis (1 mark)

Null Hypothesis: The immobility percentage is no difference between non-stressed and stressed mice.

b) What is the mean score for each condition? (1 mark)

Ans: The mean scores of immobility percentage of non-stressed and stressed mice are 44.00 and 45.10 respectively.

c) What is the median score in each condition? (1 mark)

Ans: The median scores of immobility percentage of non-stressed and stressed mice are 45.00 and 47.00 respectively.

d) What is the mode? (1 mark)

Ans: The mode scores of immobility percentage of non-stressed and stressed mice are 48 and 50 respectively.

e) The outcome of the experiment yielded a p-value of p=0.68. What is the probability that there is no difference between non-stressed and stressed mice? (1 mark)

Ans: The probability that there is no difference between non-stressed and stressed mice is 0.68.

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