Business, 01.10.2019 05:00 pikauser

Johnson electronics makes calculators. consumer satisfaction is one of the top priorities of the company's management. the company guarantees the refund of money or a replacement for any calculator that malfunctions within two years from the data of purchase. it is known from past data that despite all efforts, 5% of the calculators manufactured by this company malfunction within a 2-year period. the company recently mailed 500 such calculators to its customers. find the probability that exactly 30 of the 500 calculators will be returned for refund or replacement within a 2-year period.

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