A store finds that 30% of people who enter the store will make a purchase. During a day, 80 people enter the store. (a) Find the probability that at least 30 people will make a purchase. Round your answer to four decimal places. (b) Find the expected number of people who will not make a purchase. TTT Arial 3 (12pt) T. Path: P Dubai Chamber of Commerce surveyed 1,228 CEOs across a range of sectors in April 2020, during the emirate's strictest lockdown period regarding the future of their businesses. The following table shows the breakdown of the sample based on the size of the business and their expectations about closing down the business. Closing before two months Closing after 2 months Not closing Total Small 0.22 0.35 0.18 0.75 Large 0.05 0.08 0.12 0.25 Total 0.27 0.43 0.30 1 If a randomly selected CEO expects to close his business, what is the probability that he has a large business? Round your answer to 4 decimal digits