One uranium atom has a diameter of 3.5 Times 10 to negative 8 centimeters what is the sum of 1,000,000 uranium atoms diameters in centimeters written in standard notation

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.