1. A national poll of 600 men announced that the proportion in the survey who claimed to help their wives at home was 85%. If we took a larger poll of 1200 men, about how many would we expect to say that they help their wives at home, based on the first survey?
A. 510
B. 600
C. 1020
2. A national poll of 600 men announced that the proportion in the survey who claimed to help their wives at home was 85%. If we took a larger poll of 1200 men, what will be the standard deviation of the number of men who help at home, based on the first survey?
A. 12.37
B. 17.32
C. 153
3. A machine fills cans of soda which are labeled "12 ounces" according to a Normal distribution with mean 12.1 ounces and standard deviation 0.1 ounces. If I buy a 12-pack of the soda, what is the chance the average contents of the cans will be less than advertised?
A. 0.1587
B. 0.0003
C. 0.50