To find out whether a new serum will arrest leukemia, 10 mice,all with an advanced stage of the disease, are selected. Five micereceive the treatment and 5 do not. Survival times, in years, fromthe time the experiment commenced are as follows:
Treatment:Â Â Â Â Â Â Â Â Â Â Â 2.1Â Â Â Â Â Â Â Â 5.3Â Â Â Â Â Â 1.4Â Â Â Â Â Â 4.6Â Â Â Â Â Â 0.9
No Treatment:Â Â Â Â Â 1.9Â Â Â Â Â Â Â Â 0.5Â Â Â Â Â Â 2.8Â Â Â Â Â Â 3.1Â Â Â Â Â Â 2.7
a) Can the serum be said to be effective? Assume the twopopulations to be normally distributed.
b) Verify your work in part a) with an appropriate confidenceinterval. (Don’t forget to state the appropriate level ofconfidence)
