In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been screened for prostate cancer. Suppose a random sample of 50 of these men shows that 40 of them had never been screened. a. What is the observed frequency of men who said they had not been screened? b. What is the observed proportion of men who said they had not been screened? c. What is the expected number in the sample to say they had never been screened if 50% is the correct rate? a. The observed frequency of men who said they had not been screened is (Type an integer or a decimal. Do not round.) b. The observed proportion of men who said they had not been screened isD. (Type an integer or a decimal. Do not round.) c. The expected number in the sample to say they had never been screened if 50% i t correct rate is (Type an integer or a decimal. Do not round.)

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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In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been screened for prostate cancer. Suppose a random sample of 50 of these men shows that 40 of them had never been screened.
a. What is the observed frequency of men who said they had not been screened?
b. What is the observed proportion of men who said they had not been screened?
c. What is the expected number in the sample to say they had never been screened if 50% is the correct rate?
a. The observed frequency of men who said they had not been screened is
(Type an integer or a decimal. Do not round.)
b. The observed proportion of men who said they had not been screened is
(Type an integer or a decimal. Do not round.)
c. The expected number in the sample to say they had never been screened if 50% is the correct rate is
(Type an integer or a decimal. Do not round.)
Transcribed Image Text:In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been screened for prostate cancer. Suppose a random sample of 50 of these men shows that 40 of them had never been screened. a. What is the observed frequency of men who said they had not been screened? b. What is the observed proportion of men who said they had not been screened? c. What is the expected number in the sample to say they had never been screened if 50% is the correct rate? a. The observed frequency of men who said they had not been screened is (Type an integer or a decimal. Do not round.) b. The observed proportion of men who said they had not been screened is (Type an integer or a decimal. Do not round.) c. The expected number in the sample to say they had never been screened if 50% is the correct rate is (Type an integer or a decimal. Do not round.)
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