Pets Researchers at the National Cancer Institute re-leased the results of a study that investigated the effect of weed-killing herbicides on house pets. They examined827 dogs from homes where an herbicide was used on aregular basis, diagnosing malignant lymphoma in 473 ofthem. Of the 130 dogs from homes where no herbicideswere used, only 19 were found to have lymphoma.a) What’s the standard error of the difference in the twoproportions?b) Construct a 95% confidence interval for thisdifference.c) State an appropriate conclusion.
Pets Researchers at the National Cancer Institute re-leased the results of a study that investigated the effect of weed-killing herbicides on house pets. They examined827 dogs from homes where an herbicide was used on aregular basis, diagnosing malignant lymphoma in 473 ofthem. Of the 130 dogs from homes where no herbicideswere used, only 19 were found to have lymphoma.a) What’s the standard error of the difference in the twoproportions?b) Construct a 95% confidence interval for thisdifference.c) State an appropriate conclusion.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Pets Researchers at the National Cancer Institute re-
leased the results of a study that investigated the effect
leased the results of a study that investigated the effect
of weed-killing herbicides on house pets. They examined
827 dogs from homes where an herbicide was used on a
regular basis, diagnosing malignant lymphoma in 473 of
them. Of the 130 dogs from homes where no herbicides
were used, only 19 were found to have lymphoma.
a) What’s the standard error of the difference in the two
proportions?b) Construct a 95% confidence interval for this
difference.
c) State an appropriate conclusion.
827 dogs from homes where an herbicide was used on a
regular basis, diagnosing malignant lymphoma in 473 of
them. Of the 130 dogs from homes where no herbicides
were used, only 19 were found to have lymphoma.
a) What’s the standard error of the difference in the two
proportions?b) Construct a 95% confidence interval for this
difference.
c) State an appropriate conclusion.
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