To find out whether different concentrations of serum will arrest leukemia, 15 mice, all with an advanced stage of the disease, are selected. Five mice receive low dosage, 5 receive moderate dosage, and other 5 receive high dosage. Survival times, in years, from the time the experiment commenced are as follows. Assume the three distributions to be normally distributed. Test if there is a significant difference in the mean of the three groups at the 0.05 level of significance. State the null and alternative hypothesis. high dosage moderate dosage low dosage 4.1 3.8 2.9 4.3 3.7 2.7 3.4 3.7 2.8 3.6 3.6 2.4 3.9 3.5 2.5 mean 3.86 3.66 2.66 variance 0.133 0.013 0.043

To find out whether different concentrations of serum will arrest leukemia, 15 mice, all with an advanced stage of the disease, are selected. Five mice receive low dosage, 5 receive moderate dosage, and other 5 receive high dosage. Survival times, in years, from the time the experiment commenced are as follows. Assume the three distributions to be normally distributed. Test if there is a significant difference in the mean of the three groups at the 0.05 level of significance. State the null and alternative hypothesis. high dosage moderate dosage low dosage 4.1 3.8 2.9 4.3 3.7 2.7 3.4 3.7 2.8 3.6 3.6 2.4 3.9 3.5 2.5 mean 3.86 3.66 2.66 variance 0.133 0.013 0.043

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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