The thermostat in your classroom is set at 72F, but you think the thermostat isn't working well. On seven randomly selected days, you measure the temperature at your seat. Your measurements (in degrees Fahrenheit) are in DATASET B. What is the test statistic for a significance test of whether the mean temperature at your seat is different from 72F? Would you reject the null hypothesis at the 10% level? The 5% level? (z value at 10%, 5% and 2.5% are 1.28, 1.64 and 1.96 respectively; t value at 10%, 5% and 2.5% are 1.440, 1.943 and 2.447 respectively)

DATASET B: 69 ,66, 69 ,67 ,66, 77 ,66