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Find the probabilities for the standard normal random variable z: P(-1.55
A geological study indicates that wells drilled in a certain area should strike water with probability 0.2. Find the probability that:
A factory employs several thousand workers, of whom 30% are Hispanic. If the 15 members of the union executive committee were chosen from the workers at random
If the parents have 5 children, the number who have type O blood is a random variable X that has the binomial distribution with n=5 and p=0.25
An electric power trading company has an option to buy 1,000,000 terawatts of electricity from a producer for $10 per terawatt.
If a coin is tossed three times, the likelihood of obtaining three heads in a row is
Dollar Department Stores has received an offer from Harris Diamonds to purchase Dollar's store on Grove Street for $120,000.
As the owner of a rent-a-car agency you have determined the following statistics:
In a shipment of 15 room air conditioners, there are 3 with defective thermostats. Two air conditioners will be selected at random and inspected
Records of student patients at a dentist's office concerning fear of visiting the dentist suggest the following proportions.
A mechatornic assembly is subjected to a final functional test. Suppose that defects occur at random in these assemblies
Given that the probability that A occurs is 0.3, the probability that B does not occur is 0.6, and the probability that either A or B occurs is 0.5
A roulette wheel has 34 slots, 2 of which are green, 16 are red, and 16 are black. A successful bet on black or red doubles the money
Suppose you are eating at a pizza parlor with two friends. You have agreed to the following rule about who will pay the bill: Each person will toss a coin.
Let Z be a standard normal random variable and let V have a chi-square distribution with n-degrees of freedom
5 individuals enter the ground floor of an elevator of a building which has 10 floors(9 floors above the ground floor).
NewSource Inc. uses natural gas in its production-processing operations. Neighboring companies in its upstate Ohio area have successfully drilled
When assigning probabilities of two simple events, can we assume that each event is always equally likely to occur and, thus assign .5 to each event?
Saint Paul's Hospital commissioned an independent study to determine if there was a difference between the quality of care provided by hospital-trained nurses
The manager of an Orange dealership keeps records on customers visiting the store. Records show that 40% of the people visiting the store are female
A major hat store chain is having a sale on three nationally known brands, A, B and C. Probabilities that Brand A, Brand B or Brand C will not be big sellers
The Smart Hospital released a study done by a prominent consulting firm. Out of a sample of 500 patients, the study listed the number of deaths
Two events, A and B are equally likely. The chance that either A or B happens on a given trial of an experiment is 0.70, while the chance
In each month, the proportion of "Prize" bonds that win a prize is 1 in 11000. There is a large number of prizes and all bonds are equally likely to win
A fair coin is tossed 100 times. The event that the number of heads obtained is less than 35 is denoted by A