The probability that a component is acceptable is 0.92. Ten components are selected at random. Calculate the probability that (a) all 10 are acceptable (b) eight are acceptable (c) one is unacceptable (d) eight or more are acceptable.
The probability that a component has a lifespan of more than 6 years is 0.85. Out of 10 components calculate the probability that (a) nine have a lifespan of more than 6 years (b) two have a lifespan of less than 6 years.
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