QUESTION 4 2 points Saved Consider the experiment described in the question abov

Question

QUESTION 4 2 points Saved Consider the experiment described in the question above. Here is a plot of the data. Use of vitamin B12 Yes 1.0 1.2 1.3 1.4 1.5 1.6 Weight gain over four weeks (kilograms) Which of the following are reasonable interpretations of the plot above? (Tick as many as apply.) The difference of means between the groups is over o.5kg. The difference of means between the groups is around o.2 to o.3 kg. There is evidence of variation according to use of vitamin B12, relative to background variation. There is no evidence of variation according to use of vitamin B12, relative to background variation.

Explanation / Answer

As data over weight gain spread over 1 kg to 1.6 kg.and data of two groups are sreaded over,so difference of means between the groups can't be over 0.5kg.So should be the other option. Hence the correct option is the difference of means between the groups is around 0.2 to 0.3 kg.

plotted graph of the data points shows that the data points are scattered over the region.So we can easly state that There is evidence of variation according to use of vitamin B12,relative to background variation

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