Question: 7. Wonderful Widgets Inc. has developed electronic devices which work properly with probability 0.8, independently of each other. The new devices are shipped out in

7. Wonderful Widgets Inc. has developed electronic devices which work properly

7. Wonderful Widgets Inc. has developed electronic devices which work properly with probability 0.8, independently of each other. The new devices are shipped out in boxes containing 100 each. Use the normal approximation to compute the following and the table provided in at the end. (10 pts) (a) What percentage of the boxes contain 80 or more working devices? (b) The company wants to guarantee, say, that k or more devices per box work. What is the largest k such that at least 50% of the boxes meet the warranty

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