Blue parakeets
A pet supplier has a stock at parakeets of which 10% are blue parakeets. A pet store orders 3 parakeets from this supplies. If the supplier select the parakeets at random, whats the chance that the pet store gets exactly are blue parakeets?
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The discrete random variable X is the number of students that show up for Professor Smith's office hours on Monday afternoons. The table below shows the probability distribution for X. What is the probability that at least 1 student comes to offic
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When testing H0:u > u0, using confidence intervals, if u is not contained in the confidence interval then we would A. Draw no conclusion B. Reject H0 C. Alter the level of confidence to allow u to be in the confidence interval D. Fail to reject
A random variable is normally distributed with a mean of 25 and a standard deviation of 5. If an observation is randomly selected from the distribution, determine two values of which the smallest has 25% of the values below it and the largest has
The average hourly wage of workers at a fast food restaurant is $6.50/hr with a standard deviation of $0.45. Assume that the distribution is normally distributed. If a worker at this fast food restaurant is seleceted at random, what is the probab
If 16 doctors are chosen at random for a committee find the probability that the average age of those doctors is less than 45.45 years.
On the average, the annual profits are $8000 for each elementary book, $7000 for each intermediate book, and $1000 for each advanced book. How many new books of each type should be published to maximize the annual profit while conforming to compa
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