question archive The average magnesium concentration in ground water around Metro City is u = 55
The average magnesium concentration in ground water around Metro City is u = 55
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The average magnesium concentration in ground water around Metro City is u = 55.2 parts per million (ppm) with a standard deviation of o = 16. The table below shows the ground-water magnesium concentrations (ppm) from random sites in a suburb located 15 miles away. At a = 0.10, can it be concluded that the average magnesium concentration in the suburb differs from 55.2 ppm?
8, 78, 71, 89, 53,
102, 23, 52, 59, 11,
110, 63, 89, 58, 52,
119, 73, 81, 28, 35,
34, 123, 113, 20, 107,
5, 21, 48, 30, 98,
55, 43, 10, 99, 37
A) There is not enough evidence to support the claim that the suburb's average magnesium concentration differs from Metro City's.
B) There is evidence to support the claim that the suburb's average magnesium concentration differs from Metro City's.
