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A metallurgical engineer is about to begin a comprehensive study to determine the effects of six variables on the strength of a certain type of a Hoy.
(a) If a 26 factorial design were used how many runs would be made?
(b) If a2 is the experimental error variance of an individual observation, what is the variance of a main effect'?
{c) What is the usual formula for a 99% confidence interval for the main effect of a factor?
(d) On the basis of some previous work it is believed that a-= 8000 pounds. If the experimenter wants 99% confidence intervals for the main effects and interactions whose lengths are equal to 4000 pounds (i.e., the upper limit minus the lower limit is equal to 4000 pounds), how many replications of the 26 factorial design will be required?
Roulette An American roulette wheel has 18 red slots among its 38 slots. To test if a particular roulette wheel is fair, you spin the wheel 50 times.
What's the probability he has neither employersponsored health insurance nor a retirement plan?- What's the probability he has health insurance if he has a retirement plan?
Find the mean, median, mode, sample variance, and range. Do you think that this sample might have come from a normal population? Why or why not?
In 1997, 39.4% of men had made orders by phone in the last 12 months a market research analyst feels that this percentage has declined because of internet purchases. she obtains a random sample of 500 men and determines that 191 of them have made ord..
Do you expect the 95% confidence interval for the true proportion of all 18- to 29-year-olds who think the U.S. is ready for a woman president to be wider or narrower than the 95% confidence interval for the true proportion of all U.S. adults? Exp..
Suppose that two students named Gwyneth and Josephine have a total of 20 CDs in their room, consisting of 5 blues CDs and 15 reggae CDs. Each of the students chooses 7 CDs at random (without replacement), with all choices equally likely. (Thus, a..
A soft-drink manufacturer claims that its 12-ounce cans do not contain, on average, more than 30 calories. A random sample of 16 cans of this soft drink, which were checked for calories
The Problem When you shop, you provide details about your buying habits and about yourself to retailers. The retailers analyze those details to determine what you like, what you need, and how to provide you with incentives so you will buy more of ..
If the average child watches more than five hours of television per day, then either his power of imagination is improved or he becomes conditioned to expect.
At a large department store, the amount a shopper spent and the shopper's gender (male or female) were recorded. To determine if gender is useful in explaining the amount of money a shopper spends at the store we could
in a chemical processing plant it is important that the yield of a certain type of batch product stay above 80. if it
IRS Code Section 280A provides guidance on what expenses are allowed on rental property and how to allocate those expenses. Use the tax research methodology to research the regulations regarding rental income and expenses.
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