Two hundred thirty employee travel expense reimbursement vouchers were filed last year in the finance department...

Question

Question

Two hundred thirty employee travel expense reimbursement vouchers were filed last year in the finance department at Ramjac Co

math Statistics-And-Probability

Answer 1

Answer #1

a) Yes

The probability that a randomly selected sample contains error = 0.0957

X ~ Binomial(n = 7, p = 0.0957)

The probability mass function of X is

P(X = 1) = *0.0957 * (1 – 0.0957)-1, 1 = 0,1,2, ..., 7

b) The probability that the sample contains no erroneous vouchers

P(X =0) = * 0.0957°* (1 – 0.0957)7-0 = 0.4947075 0.4947

c) The probability that the sample contains at least two erroneous vouchers

P(x > 2) = 1 - P(x < 2) = 1 - P(x < 1) = 1 – 0.8609813 = 0.1390187 0.139

Answer 2

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