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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?
Conduct the following test using 95% level of confidence.
Draw a scatter diagram and consider the correlation for the provided data. Do larger universities tend to have more property crime.
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A researcher wishes to estimate within $300 the true average amount of money a country spends on road repairs each year. If she wants to be 90% confident, how large a sample is necessary? The standard deviation is known to be $900.
Randomly chosen circulated nickels were weighed by statistics student Dorothy Duffy as an independent project. Nickels were weighed on a Mettler PE 360 Delta Range scale, accurate to 0.001 gram. The coin's age is the difference between the current ye..
Judy's measured potassium level varies according to the Normal distribution with mean = 3.8. If a single potassium measurement is made, what is the probability that Judy is diagnosed as hypokalemic?
suppose we roll a fair die two times. a. how many different samples are there? b. list each of possible samples.
why the harvard nurses health study is an observational study. discuss whether it would be probable to gather similar
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