Following are the data from Exercise 16.52 on experimentally obtained calibration constants for samples of compounds in each of four compound groups.

a. Use a 95% family confidence level.
b. Without doing any further work or referring to Exercise 16.52, decide at the 5% significance level whether the data provide sufficient evidence to conclude that a difference exists in mean calibration constant among the four compound groups. Explain your reasoning.
Perform a Tukey multiple comparison at the specified family confidence level.

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Aliphatic Aromatic EstersAlcohols hydrocarbons hydrocarbons 0.185 0.160 0.142 0.122 0.0640.117 0.115 0.110 0.095 0.085 0.075 0.185 0.155 0.131 0.103 0.166 0.144 0.230 0.072 0.064