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Posted by on Wednesday, April 27, 2011 at 12:14am.

A consumer protection group reports that 25% of 5-lb bags of sugar of a certain brand are underweight. Three bags of sugar are selected at random. Assume that the report is correct.

a. What is the probability that all three bags are underweight?

b. What is the probability that none of the bags is underweight?

  • Statistics - , Wednesday, April 27, 2011 at 6:46am

    a. (1/4)^3 = 1/64

    b. (3/4)^3 = 27/64

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