Question 1182642
z for this is between -2.4/7 and -0.6/7 or -0.34 and -0.086 or probability of 0.0988
Unrounded z for the last is 0.1000. 2ndVARS2normalcdf(52.6,54.4,55,7)ENTER
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for a sample size of 10, the probability would be the same calculation with the sd now 7/sqrt(10)=0.2540