3. When a large truckload of mangoes arrives at a packing plant, a random sample of 150 is selected and examined for bruises, discoloration, and other defects. Assume 6% of all mangoes sent from the farm to the packing plant fail to meet standards. (a) As the quality control team begins testing the mangoes, what is the probability the first mango that does not meet the standards occurs before the fourth attempt? (b) What is the probability less than 9 mangoes in the sample of 150 fail to meet standards