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Assume that ACME tires sells t heir high performance tires for $220 each and their all weather tires for $140 each. Further assume that the cost of producing a high performance tire is $180 and the cost of producing an all wather tire is $125. Finally, assume tht if a tire does not last 40,000 miles, ACME tires will replace it free of charge to the consumer; ACME will incur the cost of replacement, but will not receive any additional revenue. What is the profit earned/loss incurred on an all weather tire that exceeds 40,000 miles?
When 297 college students are randomly selected and surveyed, it is found that 126 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.
Any state auto insurance company took a random sample of 370 insurance claims paid out during a 1-year period. the average claim was $750 with a standard deviation of $150. find .99 confidence interval for the mean claim payment.
Construct a perfect one-factorization of K_2n for infinitely many values of n. Prove the factorizations are perfect
An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F.
Give three logically possible directions of casualty, indicating for each direction whether it is a reasonable explanation for the correlation in light of the variables involved (and why).
From these we calculate = 129.44; = 122.65; sx = 9.15; sy = 11.02. Perform the test H0: against the alternative H1:, using the two sample t-test, and state any assumptions you may require to do this test.
A pediatrician is interested in studying the effect of Motrin on reducing temperature in young children. Four children with influenza have their temperatures taken immediately before and then 20 minutes after taking a standard dose
What is the expected number of ticket holders that will fail to show for the flight? What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
Gerald takes the ACT mathematics test and scores 23. ACT math scores are Normally distributed with mean 22.4 and standard deviation 4.2. Find the standardized scores for both students.
In a certain city, 50 percent of the people consider themselves conservative (C), 25 percent consider themselves liberal (L), and 25 percent consider themselves to be independent (I).
If 64 students were randomly sampled, the probability that the sample mean of the sampled students exceeds 73.5 minutes is approximately 0.
Given sample data arranged in a frequency distribution table. Use Excel to calculate the sample mean and variance from this data set.
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