2. Two different hardening processes, (1) saltwater quenching
and (2) oil quenching, are used on samples...
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Mechanical Engineering
2. Two different hardening processes, (1) saltwater quenchingand (2) oil quenching, are used on samples of a particular type ofmetal alloy. The results are shown in the table below. Assume thathardness is normally distributed. Test whether the variances arestatistically different at 90% confidence. (10 pts)
Saltwater Quench
Oil Quench
145
154
150
152
153
149
148
157
141
142
152
148
146
160
154
154
153
145
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