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The average number of acres burned by forest and range fires in a county is 4,500 acres per year, with a standard deviation of 780 acres. The distribution of the number of acres burned is normal. What is the probability that between 3,000 and 4,800 acres will be burned in any given year? Round your answer to four decimal places.
surveys have become an important component of american life. they directly affect us in so many ways including public
To aid in planning the development of a tourist shopping area, a state agency wants to estimate the average dollar amount spent by a tourist in an existing shop
While conducting a research study you find a RR = 0.67 which is used to explain the association between physical activity and depression.
1) Find the area under the standard normal curve that lies between z = -2.4 and z= 1
a. Find an equation of the least squares regression line with the slope and y-intercept rounded to 2 decimal places
Determine a 95% con?dence interval on μ, the true population mean number of sick days taken per employee. Does the evidence in the data support the hypothesis that the mean number of sick days taken by employees is less than 14.00 days?
The null hypothesis is µ ≤ 12. The test statistic is Z. Assuming that other things remain the same, will the p-value increase or decrease when X‾ Increases.
A Survey Method for Characterizing Daily Life Experience: The Day Reconstruction Method," published in Science magazine in December 2004
if a researcher wants to conduct a study about how much consumers in a target market segment will spend this year on
Based on what you now know about statistical inference, is Sara's conclusion a logical conclusion? Why or why not? How many friend samples Sara should have in order to draw conclusion with 95% confidence interval? Why?
Suppose you were to collect data for each pair of variables. You want to make a scatterplot. Which variable would you use as the explanatory variable and which as the response variable? Why?
For those of you with building experience, how could the building of the house described in this article have been improved?
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