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A vendor at the a baseball stadium must decide whether to sell ice cream or soft drinks at today's game.
Game show shows you a large revolving drum containing four identical white envelopes that have been thoroughly mixed in the drum
A company examines homeowners records and sees that the mean loss from wind annually is $250 per house with std dev of $1000.
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past
The electric company is in the process of building a new power plant. There is some uncertainty regarding the size of the plant to be built.
The number of calls received by an office on Monday morning between 8:00 AM and 9:00 AM has a probability distribution with a mean of 4
Use the normal approximation without the correction factor to find the probabilities in the following exercises.
Using the data in the Excel file Census Education Data, construct a joint probability distribution for marital status and educational status.
The population of diameter widths of steel rebar is normally distributed with a mean of 2.5cm and a standard deviation of 0.25cm.
Cashier records from the last year show that 60% of all Grayson's Grocery store customers use a previously-obtained Grayson's discount card upon checkout.
A real estate agent is taking potential buyers to look at 7 houses for sale. She has a key for each house, but she brough only 4 of the keys with her.
A marketing poll revealed that 45% of Americans say they that they have dinner regularly as a family.
The probability that a patient recovers from a disease is 63%. What is the probability that:
Find the probability of a couple having at least 1 girl among 7 children. Assume that boys and girls are equally likely and that the gender of a child
Evaluate probabilities using the laws of probability, the standard normal distribution, t-distribution, or X2-distribution.
The local area network (LAN) for the faculty of engineering computing system at the University of Waterloo is temporary shut down for repairs.
The probability of accepting a lot that is 10% defective is .677. Does that mean, then, that the probability of rejecting the lot is 0.333?
A Tire company has developed a new type of tire. Extensive testing shows that the number of miles the new tire will run before wearing out is normally
Based on FAA estimates the average age of the fleets of the ten largest U.S. commercial passenger carriers is 13.4 years with a standard deviation of 1.7 years
Game show shows you a large revolving drum containing four identical white envelopes that have been thoroughly mixed in the drum.
According to police sources a car with a certain protection system will be recovered 93% of the time. Find the probability that 5 of 8 stolen cars
If you are calculating something using a table, the number of decimal places from the table is expected. like z=1.00, table value is .8413