Which of the following situations fit the conditions for using Bernoulli trials? Explain.

a) You select a red ball from a basket containing three red balls and four blue balls.

b) A teacher records the distribution of students involved in different sports during the annual sports day.

c) A store sells two types of limited Christmas sets, having only 100 sets for type A and 150 sets for type B. If a customer purchases five Christmas sets, what is the probability the customer bought all type A Christmas sets?

d) A recent report in The Straits Times shows that fatal accidents in Singapore have dropped 3.3% in 2019 (https://
www.straitstimes.com/singapore/transport/overallimprovement-
in-road-traffic-situation-for-2019-but-moreaccidents).
Another survey finds that 105 fatal accidents out of 3,000 accidents occurred in Singapore.