Table 2.6 shows the temperature of a sample of coffee served by a cafe located in a shopping center's food court. The cafe manager wants to ensure that the coffee temperature in each cup meets established federal guidelines of 160 to 180 degrees Fahrenheit. Based on the information provided, what can you conclude about the sigma level?

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Temperature (degrees Fahrenheit) TABLE 2.6 162 166 173 173 168 168 159 166 159 181 169 175 177 168 171 162 172 172 181 166 173 172 172 181 168 174 178 169 172 169 179 175 159 166 168 170 180 160 180 168