answer all questions with explanation

Problem 6. A fruit wholesaler receives a very large shipment of oranges from a grower. The shipment is considered unacceptable if more than 20.0% of the oranges are sour. (An orange is considered sour if the sugar content falls below a specied level.) The wholesaler plans to randome sample 100 oranges from the shipment and then determine how many of these oranges are sour. The wholesaler will accept the shipment if the number of sour oranges in the sample of 100 is less than N. What value of N should they use if they want the probability of accepting an unacceptable shipment to be less than .10? [Use an appropriate approximation.)