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Should you generate electricity with your own personal wind turbine? That depends on whether you have enough wind on your site. To produce enough energy, your site should have an annual average wind speed of at least 8 miles per hour, according to the Wind Energy Association. One candidate site was monitored for a year, with wind speeds recorded every 6 hours. A total of 1114 readings of wind speed averaged 8.019 mph with a standard deviation of 3.813 mph. You ve been asked to make a statistical report to help the landowner decide whether to place a wind turbine at this site.
a) Discuss the assumptions and conditions for using Student's t inference methods with these data. Here are some plots that may help you decide whether the methods can be used:
b) What would you tell the landowner about whether this site is suitable for a small wind turbine? Explain.
Describe what that expected frequency represents - In what sense are the data in the table below categorical data?
Find the number of cases needed if the design is 1:1 matched; matching criteria are various menstrual characteristics, exogenous estrogen use, and prior pelvic surgeries.
In an article about investment alternatives, Money magazine reported that drug stocks provide a potential for long-term growth, with over 50% of the adult population of the United States taking prescription drugs on a regular basis.
a psychological introvert-extrovert test produced scores that had a normal distribution with mean and standard
Using a 1% level of significance, can we say that there is a difference in the average waiting time between the two shops? Find the critical value(s).
1. when performing a hypothesis test and the population standard deviation is known what is the p-value for a
Herbicide and corn hybrids. Genetic engineering has produced new corn hybrids that resist the effects of herbicides. This allows more effective control of weeds, because herbicides don't damage the corn.
In Exercise 7.62 (page 467), the LDL levels for males and females were compared using the two-sample t procedures that do not assume equal standard deviations.
The PCB concentration of a fish caught in Lake Michigan was measured by a technique that is known to result in an error of measurement that is normally distributed with a standard deviation of .08 ppm (parts per million- Give a 95 percent conf..
the loaves of rye bread distributed to local stores by a certain bakery have an average length of 30 centimeters and a
Using your browser's "people finder" capability, find out how many telephone listings are in your state for people with the same last name as yours. How many listings are there in your state for people named Smith?
Dotties Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers.
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