Colonoscopy a medical procedure that is designed to find and remove precancerous lesions in the colon before they become cancerous. In a sample of 51,460 people without colorectal cancer, 5043 had previously had a colonoscopy, and in a sample of 10,292 people diagnosed with colorectal cancer, 720 had previously had a colonoscopy. a. Construct a 95% confidence interval for the difference in the proportion of people who had colonoscopies between those were diagnosed with colorectal cancer and those who were not. b. Does the confidence interval contradict the claim that the proportion of people who have had colonoscopies is the same among those with colorectal cancer and those without?
Colonoscopy a medical procedure that is
designed to find and remove precancerous
lesions in the colon before they become
cancerous. In a sample of 51,460 people
without colorectal cancer, 5043 had previously
had a colonoscopy, and in a sample of 10,292
people diagnosed with colorectal cancer, 720
had previously had a colonoscopy.
a. Construct a 95% confidence interval for the
difference in the proportion of people who had
colonoscopies between those were diagnosed
with colorectal cancer and those who were not.
b. Does the confidence interval contradict the claim
that the proportion of people who have had
colonoscopies is the same among those with
colorectal cancer and those without?
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