Listed below are the lead concentrations in ug/g measured in
different traditional medicines. Use a 0.05...
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Listed below are the lead concentrations in ug/g measured indifferent traditional medicines. Use a 0.05 significance level totest the claim that the mean lead concentration for all suchmedicines is less than 14 ug/g.
?17.5 3.5 12.5 9 4 9.5 20.5 10 10.5 21
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Values X Xi X 2 175 3249 35 6889 125 049 9 784 4 6084 95 529 205 7569 10 324 105 169 21 8464 Total 118 3411 Mean X Xi n X 118 10 118 Sample
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