EDUCATIONAL LEVEL OF VOTERS In a survey of 1000 eligible voters selected at random, it was found…

EDUCATIONAL LEVEL OF VOTERS In a survey of 1000 eligible voters selected at random, it was found that 80 had a college degree. Additionally, it was found that 80% of those who had a college degree voted in the last presidential election, whereas 55% of the people who did not have a college degree voted … Continue reading "EDUCATIONAL LEVEL OF VOTERS In a survey of 1000 eligible voters selected at random, it was found…"

QUALITY CONTROL An automobile manufacturer obtains the microprocessors used to regulate fuel…

QUALITY CONTROL An automobile manufacturer obtains the microprocessors used to regulate fuel consumption in its automobiles from three microelectronic firms: A, B, and C. The quality-control department of the company has determined that 1% of the microprocessors produced by firm A are defective, 2% of those produced by firm B are defective, and 1.5% of … Continue reading "QUALITY CONTROL An automobile manufacturer obtains the microprocessors used to regulate fuel…"

CAR THEFT Figures obtained from a city’s police department seem to indicate that, of all motor…

CAR THEFT Figures obtained from a city’s police department seem to indicate that, of all motor vehicles reported as stolen, 64% were stolen by professionals whereas 36% were stolen by amateurs (primarily for joy rides). Of those vehicles presumed stolen by professionals, 24% were recovered within 48 hr, 16% were recovered after 48 hr, and … Continue reading "CAR THEFT Figures obtained from a city’s police department seem to indicate that, of all motor…"

HOUSING LOANS The chief loan officer of La Crosse Home Mortgage Company summarized the housing…

HOUSING LOANS The chief loan officer of La Crosse Home Mortgage Company summarized the housing loans extended by the company in 2007 according to type and term of the loan. Her list shows that 70% of the loans were fixed-rate mortgages (F), 25% were adjustable-rate mortgages (A), and 5% belong to some other category (O) … Continue reading "HOUSING LOANS The chief loan officer of La Crosse Home Mortgage Company summarized the housing…"

COLLEGE ADMISSIONS The admissions office of a private university released the following admission…

COLLEGE ADMISSIONS The admissions office of a private university released the following admission data for the preceding academic year: From a pool of 3900 male applicants, 40% were accepted by the university and 40% of these subsequently enrolled. Additionally, from a pool of 3600 female applicants, 45% were accepted by the university and 40% of … Continue reading "COLLEGE ADMISSIONS The admissions office of a private university released the following admission…"

QUALITY CONTROL It is estimated that 0.80% of a large consignment of eggs in a certain…

QUALITY CONTROL It is estimated that 0.80% of a large consignment of eggs in a certain supermarket is broken. a. What is the probability that a customer who randomly selects a dozen of these eggs receives at least one broken egg? b. What is the probability that a customer who selects these eggs at random … Continue reading "QUALITY CONTROL It is estimated that 0.80% of a large consignment of eggs in a certain…"