A Local Newspaper Claims That 70% of the Items Advertised $x \leq 16$

Essay

A local newspaper claims that 70% of the items advertised in its classifieds section are sold within 1 week of the first appearance of the ad. To check the validity of the claim, the newspaper randomly selected n = 25 advertisements from last year's classifieds and contacted the people who placed the ads. They found that 16 of the 25 items sold within a week. Based on the newspaper's claim, is it likely to observe $x \leq 16$ who sold their item within a week? Use a binomial probability table.