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To find out whether a new serum will arrest leukemia, 10 mice, all with an advanced...

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Basic Math

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:           2.1        5.3      1.4      4.6       0.9

No Treatment:     1.9        0.5      2.8      3.1       2.7

Using the above data , the true average lifetime of mice with notreatment is more than 3 months smaller than it is for the micewith treatment? Assume the two populations to be normallydistributed with equal variability.

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Let denote thetrue average lifetime of mice with    See Answer
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