Hello, i am taking quantitative methods for business, which has a lot of excel based mathematics and i was wondering if anyone could . here is the question: refer to the table that illustrates customer’s complaints about a manufacturing company. a. what is the probability a customer complained during the guarantee period? b. what is the probability that a customer complained about an electrical problem or a mechanical problem? table is included in attachment. also !

Part A:

The probability that a customer complained during the guaranteed period is given by the number of costumers that complained during the guarantee period devided by the total number of students.

Therefore, the probability that a customer complained during the guaranteed period is

Part B:

The probability that a customer complained about an electrical problem or a mechanical problem is given by the sum of the probability that the customer complained about an electrical problem or the probability that the customer complained about a mechanical problem.

Therefore, the probability that a customer complained about an electrical problem or a mechanical problem is