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Posted by on Sunday, August 7, 2011 at 8:36pm.

Records show that 29% of all payments to a mail-order company are submitted after the due date. Suppose 50 payments are submitted this week. Let r be a random variable that represents the number of payments that are late. Use the normal approximation to the binomial to estimate P(r > 20).
a. 0.0307
b. 0.0594
c. 0.9406
d. 0.9564

Using the information from problem, use the normal approximation to the binomial to estimate P(20< r< 25).
a. 0.0591
b. 0.0585
c. 0.0431
d. 0.0304

  • Math - , Wednesday, March 28, 2012 at 8:27pm

    0.0594

  • Math - , Thursday, July 18, 2013 at 3:06pm

    b) 0.0591

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