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Prothrombin time is a measure of the clotting ability of blood. For 10 rats treated with an antibiotic and 10 control rats, tStandard error s(m=m»5/52p/n1) + (s2p/n2) = 10 + = 4:05 Confidence interval U -uz=(M1-M2)ts(ml-m2=2+(2.1*4.05)=28.51 95% CI [In conclusion, it is noted the null hypothesis H, isnt rejected. There is not enough evidence to claim that the population m(f) (4 points) Determine the sample size required to have an 80% chance of rejecting the null hypothesis if the true mean dif

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Answer #1

e) According to the solutions (c) and (d)

Assumptions:(i) Two populations must be independent to each other.

ii) Two populations must be normally distributed.

iii) Population variances must be unknown and equal.

f) ES= 3/9= 1/3= 0.33

n= (1.96+0.84/0.33)^2

n= 71.99

n=72

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