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What is the distribution of the sample proportion

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Reference no: EM131737770

Complete the following question using Excel.

A local business knows that 30% of their customers use a credit card to pay for their purchase. Suppose a sample of 85 customers is selected.

  • What is the distribution of the sample proportion? Enter "binomial" or "normal" in blank #1.
  • In blank #2 enter the probability that less than 18 customers in the sample use a credit card to pay for their purchases. (Round your answer to 4 decimal places and enter your answer as 0.1234, not .1234.)
  • In blank #3 enter the probability that more than 35% of customers in the sample use a credit card to pay for their purchases. (Round your answer to 4 decimal places and enter your answer as 0.1234, not .1234.)
  • In blank #4 enter the probability that between 20 and 30 customers in the sample use a credit card to pay for their purchases. (Round your answer to 4 decimal places and enter your answer as 0.1234, not .1234.)

Reference no: EM131737770

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