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Canada has two official languages, English and French. Choose a Canadian at random and ask, "What is your mother tongue?" Here is the distribution of responses, combining many separate languages from the broad Asian/Pacific region:
Language English French Asian/Pacific OtherProbability 0.63 0.22 0.06 ?
What probability should replace "?" in the distribution?
Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
A manager of a small store wanted to discourage shoplifters by putting signs around the store saying "Shoplifting is a crime!" However, he wanted to make sure this would not result in customers buying less.
Develop a hypothesis to investigate this problem based on the claim of the heat pump manufacturer
The confidence interval estimate of the population mean will be __________ for a 95% confidence level than for a 90% confidence level. Narrower or Wider?
If we know that the length of time it takes a college student to find a parking spot in library parking lot follows a normal distribution with mean of 3.5 minutes and a standard deviation of 1 minute, determine the probability that a randomly sele..
Schadek Silkscreen Printing, Inc. purchases plastic cups on which to print logos for sporting events, proms, birthdays, and other special occasions. What is the estimated proportion defective in the population?
Consider a Poisson probability distribution with 2 as the average number of occurrences per time period. Write the appropriate Poisson probability function.
A shipment of 250 netbooks contains 3 defective units. Determine how many ways a vending maching company can buy three of these units and receive a) no defective units b) all defective units c) at least one good unit.
I tossed a coin 6 times and recorded the outcomes - H for heads and T for tails. The first set of tosses yielded HTHTTH and the second set of tosses yielded TTTHHH. Which set of tosses is more probable to happen? And why?
The liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its effectiveness. Records indicate that the mean shelf life of a 5-gallon jug of chlorine is 2,10 hours (90 days).
If the test contains 250 questions, what is the probability that Julie will score 75% or lower? (Use the normal approximation to the sampling distribution to solve this problem.)
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month.
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