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A study was conducted to see the differences between oxygen consumption rates for male runners from a college who had been trained by two different methods, one involving continuous training for a period of time each day and the other involving intermittent training of about the same overall duration. The means, standard deviations, and sample sizes are shown in the following table.
Continuous training n1 = 15 x1 = 46.28 s1 = 6.3 Intermittent training n2 = 7 x2 = 42.34 s2 = 7.8
If the measurements are assumed to come from normally distributed populations with equal variances, estimate the difference between the population means, with con?dence coef?cient 0.95, and interpret.
Fast Service, a chain of automotive tune-up shops, advertises that its personnel can change the oil, replace the oil filter, and lubricate any standard automobile in 15 minutes, on the average.
You have to take this data and complete a regression analysis. Your assignment is to select a data set, complete the descriptive statistics and do a full regression analysis and write up conclusions and observations.
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
on a test of motor coordination the population of average bowlers has a mean score of 24 with a standard deviation of
A survey of 600 non-fatal accidents showed 259 involved the use of a cell phone. Construct a 99% confidence interval for the proportion of fatal accidents that involved the use of a cell phone?
several years of study by dedicated researchers have shown that on average 4 sharks per month can be found in an area
How many plants must be sampled if no preliminary estimate is available? If less than that many plants is sampled, which answer best describes what happened?
Probability about 0.2 of suggesting that the person is deceptive. What is the probability that the number classified as deceptive is less than the mean?
bags of a certain brand of tortilla chips claim to have a net weight of 16 ounces. net weights actually vary slightly
The heights, in feet, of the five tallest buildings in four large cities are compared. What is the critical value if the level of significance is 0.10?
Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim.
Find out annual break-even volume for the Rolling Creek Textile Mill.
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