Identify the initial amount a and the rate of growth r (as a percent) of the exponential function f(t) = 1500(1.074)'. Evaluate the function when t=5. Round your answer to the nearest tenth.

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.