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1. If a single card is drawn from an ordinary deck of cards, what is the probability of drawing either a heart or a 6? (Answer in a fraction).
2. The probability that federal income tax returns will have 0, 1, 2 errors is 0.53, 0.15 and 0.32 respectively. If 10 randomly selected returns are audited, what is the probability that six will have no errors, three will have one error and one will have two errors?
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
A consumer organization estimates that over a 1-year period 17 percent of cars will require to be repaired once, 7 percent will need repairs twice, and 4 percent will require three or more repairs. What is the probability that a car chosen at rand..
The heights of young women are approximately normal with mean 65 inches and standard deviation 2.5 inches.
What reasons for complaints do you think the hotel should focus on if it wants to reduce the number of complaints? Describe.
If the loss of weight of customers at the end of their first month is normally distributed with a mean of 6.7lbs and a standard deviation of 0.81lbs
One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
The sales manager had predicted, before the business started, that year 1's sales would be 410 air conditioners. Using exponential smoothing with a weight of alpha = 0.30, develop forecasts for years 2 through 6.
Determine point estimate of population mean? By using 90% confidence, determine the margin of error?
Illustrate what is the probability all four calls are infact emergencies. Illustrate what is the probability that three or more calls are not emergencies.
Using six-step critical value approach, at the 0.05 level of significance, is there evidence that population mean delivery time has been increased below previous population mean value of 25 minutes?
Find out the probability distribution, and the cumulative probability distribution of car arrivals.
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
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