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A random sample of 15 teachers from Rhode Island has an average salary of $35,270, with a standard deviation of $3256. A random sample of 30 teachers from New York has an average salary of $29,512, with a standard deviation of $ 1432. Is there a significant difference in teachers' salaries between the two states? Use a= 0.02. find the 98% confidence interval for the difference of the two means.
A seven member committee of students is formed to study environmental issues. What is the likely hood that anyone of the seven is chosen as the spokes person?
Evaluate the significance of the hypothesis that the randomized algorithm has a lower average runtime than the known comparison algorithm. As before, explain and list your calculations, test choices, and conclusion drawn.
Car Emissions: Listed below are measured amounts of greenhouse gas emissions from cars in three different categories. The measurements are in tons per year, expressed as CO2 equivalents.
Lab technicians at a major mdical lab can process an average of 400 blood samples a day with a standard deviation of 50 samples. The processing follows a normal distribution.
question 1 summarise the provisions and purpose of the rics valuation-professionalnbsp standards the red book and
What is the probability that the sample mean will be greater than M = 510. In symbols, what is p (M>510)?
How large should the sample size be if she wishes to be accurate within $0.10. A previous study showed that the standard deviation of the price was $.12.
The random sample population is 500 people who shop for workout programs and equipment. The sample mean of those shopping is that they spend an average of $250.00 per purchase and perchance at least 2 to 3 items for working out and weight lost
Illustrate how critical values associate to the confidence interval using example variable. Explain how margin of error associates to confidence intervals and to ecology.
In a transportation problem with 5 supply points, 3 demand points, and total supply equaling total demand, the number of decision variables will be:
consider these ratio scores from an experimentnbspnbspcondition 1nbspnbspnbspnbspcondition 2nbspnbspnbspnbspcondition
a sample of n 16 scores has a mean of m 65 and an estimated standard error of 2 points. what is the sample
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