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
2 answers
0.0594
b) 0.0591
1 answer