Question 3
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Consider the data on the pH of rain in Ingham County, Michigan:
5.47 5.37 5.38 4.63 5.37 3.74 3.71 4.96 4.64 5.11
5.65 5.39 4.16 5.62 4.57 4.64 5.48 4.57 4.57 4.51
4.86 4.56 4.61 4.32 3.98 5.70 4.15 3.98 5.65 3.10
What proportion of the samples has pH below 4.5?
a.
None of the others
O b. 0.233
O c. 0.267
O d. 0.3
e.
0.333
