Question 1185624
z=(x bar-mean)/sigma/ssqrt(n)
so this is (119-114.8)/13.1/sqrt (23)
=4.2*sqrt(23)/13.1
=1.54
and 7.2*sqrt(23)/13.1
=2.64
this has probability of 0.0576
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check with 2ndVARS 2 (normal cdf),119,122,114.8,sqrt(23)/13.1)) ENTER, which gives 0.0579, the difference due to less rounding.