Question: 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.

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 200 of these men shows that 160 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

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