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At a large university it is known that 40% of students live on campus. The director of student life is going to take random sample of 200 students. Determine the probability that more than half of t
An unknown distribution has mean of 45 and standard deviation of eight. Samples of size n = 30 are drawn randomly from the population. Find the probability that the sample mean is between 42 and 50.
An automated production process produces acceptable product 90 percent of the time. What is the probability that a random sample of size 25 will contain at least two defectives?
Average number of arrivals throughout a 30 minute interval is 3. Determine the probability that during any 30 minute interval, there will be:
Maintaining the gains that have been made with revised process in the long term by avoiding potential problems that can occur when a process is changed involves which part of the DMAIC process?
Below is the number of defective items from a production line over twenty consecutive morning shifts.
An airline charges following baggage fees: $25 for the first bag and $35 for the second. Assume 54% of passengers have no checked luggage, 34% have one piece of checked luggage and 12% have two piec
An unknown distribution has mean of 90 and standard deviation of 15. Samples of size n=25 are drawn randomly from the population. Determine the probability that the sample mean is between 85 and 92
A deli lets you order the sandwich your way. There are 6 choices of bread, 4 choices of meat, 4 choices of cheese , and 12 different choices of garnishes (condiments). How many different sandwich p
Suggest two parents who are both heterozygous for albinism. What will be the probability of this couple having three children, one with albinism and two with normal pigmentation?
Before every flight, the pilot must verify that total weight of the load is less than the maximum allowable load for the aircraft. The aircraft can carry 41 passengers,
Suppose that adults have IQ scores which are normally distributed with mean of ?=100 and standard deviation ?=20. Determine the probability that a randomly selected adult has an IQ less than 140.
In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. T
There are five applicants for job, all of whom have different qualifications. The employer is in hurry, and doesn't interview the applicants or check their references. 2 of the applicants are hired
Scott Paper tests its toilet paper by subjecting 15 rolls to wet stress test to see whether and how often the paper tears throughout the test. Following are the number of defectives found over last
The annual demand for a product is 180,000 units with daily standard deviation of demand of 90. The cost to place an order is $750 and holding one unit in inventory costs $15 a year. Lead time is 4
Is the sample mean always the most frequently occurring value? If so, explain why. If not, give an example.
A resturant is offering daily special entree with selection of 1 appetizer, 1 side dish and 1 desert. There are 4 appetizers, 5 side dishes and 2 deserts on the menu.
Use the definition of random selection of points in an interval
How many sequences of outcomes are possible if one rolls two identical dice 10 successive times?
A quality engineer analyzed the paint job on the Lexus IS350 model at the Toyota plant in Woodstock. 250 cars were analyzed. The drying time (in hours) and colour of paint were recorded. Determine
Which branch of statistics would open 10 boxes of ABC cereal, count pieces of cereal in each box, and write down a report for the quality control department?
A sample of 300 homes two weeks after Saturday night schedule revision yielded the following viewing audience data: ABC 95 homes CBS 70 homes NBC 89 homes and independent 46 homes .test a=.05 to det
The Chinese SSQ lotto draws 6 random red numbers from {1,2,...,33} and random blue number from {1,2,...,16}. You play the game by choosing 6 red numbers and 1 blue number. You win the jackpot if you