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.
1 answer:
Answer:
120,0.60,100
Step-by-step explanation:
Given that 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 120 of them had never been screened.
a) the observed frequency = 120
b) The observed proportion of men who said they had not been screened
=
c) Expected number in the sample to say they had never been screened if 50% is the correct rate
= np
=
You might be interested in
Given:
Steven wrote this equation:
To find:
The error in Steven's reasoning and then find the correct product.
Solution:
We have,
This statement is incorrect because we cannot write product directly as Steven wrote.
We need to multiply the place values of each digit of first number with the place values of second number and then we need to add the resulted values.
Therefore, the correct product is 72.