Dorothy Little purchased a mailing list of 2000 names and ad

Dorothy Little purchased a mailing list of 2,000 names and addresses for her mail order business, but after scanning the list she doubts the authenticity of the list. She randomly selects five names from the list of validation. If 40% of the names on the list are non-authentic, and x is the number of non-authentic names in her sample, P(x<2) is ___

a)0.3370

b) 0.9853

C 0.9785

d) 0.2333

e) 0.5000

Solution