The average number of acres burned by forest and range fires…

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 normal. What is the probability that between 2,500 and 4,200 acres will be burned in any given year?

In an attempt to measure the effects of acid rain, researche…

In an attempt to measure the effects of acid rain, researchers measured the pH (7 is neutral and values below 7 are acidic) of water collected from rain in Ingham County, Michigan.   (The same data set will be used in few questions. DO NOT delete this from your calculator)   5.47 5.37 5.38 4.63 4.34 5.02 3.71 4.96 4.64 5.94 5.54 5.39 4.16 5.62 4.57 5.90 5.48 4.57 4.57 4.51 4.62 4.56 4.61 4.32 3.98 5.56 4.15 3.98 5.65 3.10 5.04 4.62 4.88 4.34 4.16 4.64 5.12 3.71 4.80 5.59   Explain the shape of the distribution.