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 20 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.)
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 20 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.)
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
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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 20 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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