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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.
Hank made payments of $134 per month for 30 years to purchase property. He promptly sold it for $114,881. What annual interest rate would he need to earn on an ordinary annuity for a comparable rate of return?
The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
Identify the null and alternative hypothesis, test statistics, p-value(or range of P-value), critical value(s), and state the final conclusion that address the original claim.
you take a trip by air that involves three independent flights. if there is an 82 percent chance each specific leg of
greta and troy are playing chess. greta is a poor sport and will stop playing as soon as she loses 3 chess matches.
If an individual is selected, find the probability that the individual's pressure will be between 120 and 121.8 mm Hg. Why is the answer to Part a so much smaller than the answer to Part b?
A researcher is interested in the effect of an electrolytic sports drink on the endurance of adolescent boys. A group of 30 boys is selected and half are given a treadmill endurance test while consuming the sports drink and the other half take the..
A pharmaceutical manufacturer wants to determine the concentration of a key component of cough medicine that may be used without the drug's causing adverse side effects.
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49. Change the number from 49 to 16 and recalculate the confidence interval. Using results, explain the effect of an outlier or extreme ..
the listing price of a random sample of two-year-old honda civics was obtained for four cities in the united states.
BMI in children is approximately normally distributed with a mean of 24.5 and a standard deviation of 6.2. A BMI between 25 and 30 is considered overweight. What proportions of children are overweight?
Bill calculates a linear correlation coefficient between two variable as 1.20. How would you interpret this?
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