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2. A catalogue order desk has a data claim that 73% of calls result in an...

2. A catalogue order desk has a data claim that 73% of calls result in an order. Suppose an operator makes 7 calls , and the calls are made independently.

  1. Find the probability of obtaining exactly 4 orders.

  2. Find the probability of obtains at most 5 orders

  3. Find the probability of obtains atleast 6 orders.

  4. Find the mean

  5. Find the standard deviation. P=.73 , n=7

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