Question 1171770
SEM is .80/sqrt(100) =$0.08.
95% half-interval is z*sigma/sart(n)=1.96*0.80/10=0.156
the 95% interval is ($2.244, $2.556)
We are highly confident that the true value lies within the interval. Given that $2.00 is well below the lower limit of the interval, $2.00 sale would be an unusually low sale price.