Pinky bauer, chief financial officer of harrison haulers, inc., suspects irregularities in the payroll system. if 10% of the 5,000 payroll vouchers issued since january 1, 2000, have irregularities, the probability that pinky's random sample of 200 vouchers will have a sample proportion greater than .06 is .) 0.4706b.) 0.9706c.) 0.0588d.) 0.9412e.) 0.9876

b.) 0.9706

Step-by-step explanation:

Given : Proportion of  the 5,000 payroll vouchers issued since January 1, 2000, have irregularities : p=0.10

Now , using standard normal z-value table , we have

The probability that Pinky's random sample of 200 vouchers will have a sample proportion greater than .06 will be :-

  [By using z-value table]

Hence, the  probability that Pinky's random sample of 200 vouchers will have a sample proportion greater than .06 is b.) 0.9706.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.