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The average number of acres burned by forest and range fires in a large New Mexico County is 4,300 acres per year with a standard deviation of 750 acres. The distribution of the number of acres burned is normally distributed.
a. What is the probability that between 2,500 acres and 4,200 acres will be burned in a given year?
b. What number of burnt acres corresponds to the 38th percentile?
a confidence interval estimate for the population mean is given to be 36254476. if the standard deviation is 17.803
The probability I'll jog today is 0.90 and the probability you'll jog tonight is 0.30. Find the probability:
Content of 100 randomly chosen cigarettes was 3.1 mg. What is the probability that the sample mean would have been as high as or higher than 3.1 mg if the company's claims were true?
A statistical study reported that a drug was effective with a p-value of .042. Explain in words what this tells you.
describe the characteristics of the f distribution. provide examples.what are we testing when we test for two
Random samples of five were selected from each of three populations. The sum of squares total was 100. The sum of squares due to the treatments was 40.
Compute the standard error of the sampling distribution of sample means.
A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on very accurate scale. The results in grams were 3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477 (a)Construct a 90% confidence interval for the tr..
suppose you are interested in bidding on a piece of land and you know that one other bidder is interested. the seller
Find a 95 percent confidence interval for the population mean concentration of uric acid in this patients blood. The concentration of uric acid in this patient's blood.
Unnithan, Houser, and Fernhall (2006) were interested in whether playing the game Dance Dance Revolution (DDR) affected the heart rate of overweight and nonoverweight adolescents differently. A group of 22 adolescents, 10 classified as overwei..
Can researcher conclude that humidity has significant effect on eating behavior? Use a two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
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