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What proportion fall between 26 to 30 mpg range? Gas mileage rates for 330 cci are uniformly distributed between 25 mpg to 35 mpg? What proportion of 330 cci cars fall between 26 to 30 miles per gal
What percentage of BMW dealers are pricing the 300 cci at more than the average price for a CLK 320? What percentage of Mercedes dealers are pricing a CLK 320 less than the average price of a 330 cc
Conduct the appropriate statistical test that will answer your hypothesis. It must be a statistical test covered in this course such as regression analysis, single t-test, independent t-test.
Twenty components were pretested at the time of manufacture, 9 days later, and 58 days later. The data (in milliamps) are shown below. Using the .05 level of significance, are there any differences
Suppose your firm is considering investing in a project with the cash flows shown below, that the required rate of return on projects of this risk class is 12 percent, and that the maximum allowable
On weekdays there is on average of four customers waiting in line. What is the probability that you visit Safeway today during this period and find No customers are waiting?
Suppose you are to analyze the ages of 282 randomly selected employees, ranging from 28 to 64. Find the appropriate class width with precision of two decimal digits.
National association of realtors estimates that 23% of all houses purchased in 2004 were considered investment. If a sample of 800 homes sold in 2004 is obtained whats the probability that between 1
Consider the following hypothesis test, A sample of 25 provided a sample mean of 14 and a sample standard deviation of 4.32.
in a shipment of 57 vials only 18 does not have hailine cracks. 6 vials are randomly selected from the shipment. find the probability that at least one of the 6 selected vials has a hairline crack.
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
What is the 95% confidence interval for the mean number of microwaves sold at a retail store in the chain last week?
At a party there are 37 students over age 21 and 22 students under age 21. You choose at random 3 of those over 21 and separately choose at random 2 of those under 21 to interview about attitudes to
two temperatures (40°C and 50°C) and four stirring rates (30 rpm, 60 rpm, 90 rpm, and 120 rpm) on the yield of the process. She will process four batches of the product at each combination o
Determine: The probability q that the next three arrivals come from the same process The PMF of N, the number of arrivals from the ?rst process that occur before the fourth arrival from the second p
Areas within the forest may differ in soil fertility. Describe a matched pairs design using three pairs of circles that will reduce the extra variation due to different fertility. Sketch the circles
Estimate the average amount spent per day by families of size four while vacationing in Niagra Falls with 95% confidence
Describe how to simulate a single shot if the probability of making each shot is 0.7. Then describe how to simulate 5 independent shots.
Explain how you would use random digits to simulate one attempt at the exam. Elaine will of course stop taking the exam as soon as she passes.
Which method is more suitable for forecasting factory orders? Hint: Compare the two methods based on Mean Absolute Deviation (MAD)?
If five women who take the math portion of the SAT are random selected, find the probability that their mean score is above 500. Find the score separating the bottom 90% from the top 10%.
Choose a new car or light truck at random and note its color. Here are the probabilities of the most popular colors for vehicles made in North America in 2000.
Draw a tree diagram for selecting a person from this population (outcomes: antibodies present or absent) and for testing his or her blood (outcomes: EIA positive or negative). (Do this on paper. You
Let A be the event that a young driver is an A student and C the event that a young driver is involved in an accident this year. State the information given in terms of probabilities and conditional
An examination consists of multiple-choice questions, each having five possible answers. Linda estimates that she has probability 0.85 of knowing the answer to any question that may be asked. If she