The average magnesium concentratioin in ground water around Metro City is (mu)=65.6 parts per million (ppm) with a standard deviation of standard deviation of 10. The table below shows the gound water magnesium concentrations(ppm) from random sites in a suburb locaated 15 miles away. At a=0.10, can it be concluded that the average magnesium concentration in the suburb differs from 65.6 ppm?
38,83,120,7,24,81,116,28,102,95,16,50,21,25,38,76,107,89,26,122,123,95,87,28,115,98,92,63,118,125,53,29,65,40,102
A) State the hypothesis and identify the claim
b) Find the critcal values
c) Compute the test statistic
d) Make a decision
e) Summarize the results