1. 58% of american coin dealers feel that speculating in silver
1. 58% of American coin dealers feel that speculating in Silver Eagles will be profitable next year. In a simple random sample of 150 coin dealers what is the probability that between 54% and 60% believe that it will be a good year to speculate on Silver Eagles.
2. The average monthly mortgage payment for recent home buyers in Lexington is $732, with standard deviation of $421. A random sample of 125 recent home buyers is selected. The approximate probability that their average monthly mortgage payment will be more than $782 is: