The most effective anti-venom for snakebites in sub-Saharan Africa, Fav-Afrique,

Question

The most effective anti-venom for snakebites in sub-Saharan Africa, Fav-Afrique, is running out due to how expensive it is lo produce. According to Doctors without Borders, starting in the summer of 2016, this could imperil the lives of 1.5 million people who are bitten each year. Researchers investigated potentially chapter alternatives and asked the question: Does antivenin A given after a rattlesnake bite reduce venom? Two groups of pigs (randomly assigned) were injected with rattlesnake venom and then given the new treatment, antivenin A. or a placebo of saline solution. The amount of swelling (measured in ml) the pigs demonstrated eight hours later was measured. As always. ensure that you have supported your conclusion with. Cl.

Explanation / Answer

Antivenom A : 204.9,205.2,219.5,209.4,227.8
n1=5
Mean1 = 213.36
SD1 = 10

Placebo : 239.4,199.3,204.2,250.4,303.4,179.5
n2=6
Mean2 = 229.36
SD2 = 44.83

Standard Error = sqrt((10)^2/5 + (44.83)^2/6) = 18.84

t = (229.36 - 213.36)/ 18.84 = 0.85

dF = 5 + 6 -2 = 9

P-value = 0.417

Margin of error = t-value * SE = 0.85 * 18.84 = 16.014

Confidence interval :
= ((229.36 - 213.36)-16.014 , (229.36 - 213.36) + 16.014)
= (-0.014 ,32.014 )

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