1. Josiah's checking account was at $104,24 on Monday. One of his checks was cashed on Tuesday and his account went down to - $23.99. What was the value of the check that was cashed? Show all work
necessary to justify your answer.

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.