QNT 561 FINAL EXAM – QUESTION AND ANSWERS (QNT 561 FINAL EXAM – QUESTION AND ANSWERS)

QNT 561 FINAL EXAM – QUESTION AND ANSWERS

QNT 561 FINAL EXAM – QUESTION AND ANSWERS 1 A market researcher is interested in determining the average income for families in San Mateo County, California. To accomplish this, she takes a random sample of 300 families from the county and uses the data gathered from them to estimate the average income for families of the entire county. This process is an example of _______. • inferential statistics 2 If x is a binomial random variable with n=10 and p=0.8, what is the proba...

QNT 561 FINAL EXAM – QUESTION AND ANSWERS If x is a binomial random variable with n=10 and p=0.8, what is the probability that x is equal to 4? • .0055 • .0063 • .232 • .994 • .124 The weight of a USB flash drive is 30 grams and is normally distributed. Periodically, quality control inspectors at Dallas Flash Drives randomly select a sample of 17 USB flash drives. If the mean weight of the USB flash drives is too heavy or too light the machiner...