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In 1997, researchers investigated the effect of weed-killing herbicides on house pets. They examined 834 cats from homes where herbicides were used regularly, diagnosing malignant lymphoma in 433 of them. Of the 113 cats from homes where no herbicides were used, only 20 were found to have lymphoma. a) What is the standard error of the difference in the two proportions? b) Create a 90% confidence interval for this difference. c) State an appropriate conclusion

In 1997, researchers investigated the effect of weed-killing herbicides on house pets. They examined 834 cats from homes where herbicides were used regularly, diagnosing malignant lymphoma in 433 of them. Of the 113 cats from homes where no herbicides were used, only 20 were found to have lymphoma. a) What is the standard error of the difference in the two proportions? b) Create a 90% confidence interval for this difference. c) State an appropriate conclusion

MATLAB: An Introduction with Applications
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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In 1997, researchers investigated the effect of weed-killing herbicides on house pets. They examined 834 cats from homes where herbicides were used regularly, diagnosing malignant lymphoma in 433 of them. Of the 113 cats from homes where no herbicides were used, only 20 were found to have lymphoma. a) What is the standard error of the difference in the two proportions? b) Create a 90% confidence interval for this difference. c) State an appropriate conclusion
Transcribed Image Text:In 1997, researchers investigated the effect of weed-killing herbicides on house pets. They examined 834 cats from homes where herbicides were used regularly, diagnosing malignant lymphoma in 433 of them. Of the 113 cats from homes where no herbicides were used, only 20 were found to have lymphoma. a) What is the standard error of the difference in the two proportions? b) Create a 90% confidence interval for this difference. c) State an appropriate conclusion
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