A population of beetles is growing according to a linear growth model. The initial population (week 0) was P 0 = 3, and the population after 8 weeks is P 8 = 67. A. Find the explicit formula for the beetle population in week n. B. After how many weeks will the beetle population reach 187?

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.