one minus probability that 12 or more recognize
1 - [.95^15 + (15 * .95^14 * .05) + (105 * .95^13 * .05^2) + ...
... (455 * .95^12 * .05^3)]
The brand name of McDonald's has a 95% recognition rate. If a McDonald's executive wants to verify that rate by beginning with a small sample of 15 randomly selected consumers,
find the probability that fewer than 12 of the 15 consumers recognize the McDonald's brand name.
round the answer to three decimal places.
1 answer
2 answers