Question 1077580
For the mean daily revenue, the sampling distribution is mean 7200 and sd 1200/sqrt(30).  SE is 219.09
probability z > (7500-7200)/1200/sqrt(30)
z>300*sqrt(30)/1200 or (1/4)sqrt(30)=1.3693
probability is 0.0855
2nd VARS 2 input 2nd ANS, 6, ENTER