Math Solutions

[Steps Shown] The purchasing department of a large consulting engineering office buys a lot of 20 state-of-the-art photocopiers from Delta Theta Corporation. After

Question: The purchasing department of a large consulting engineering office buys a lot of 20 state-of-the-art photocopiers from Delta Theta Corporation. After receiving the shipment the engineer in charge of the computing and communication services selected a random sample of six photocopiers and then started testing their performance.

  1. Compute the probability that at most three photocopiers will be found substandard assuming that the whole lot contains six substandard units.
  2. Compute the probability that more than four units will be found substandard assuming that the whole lot contains eight substandard units.

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