8. The daily use of electricity (measured in thousands of kilowatt-hours) in a certain town is a normal rv X with a mean of 18 and a standard deviation of 6. (a) Write P (1

Extracted text: 8. The daily use of electricity (measured in thousands of kilowatt-hours) in a certain town is a normal rv X with a mean of 18 and a standard deviation of 6. (a) Write P (1 < x="">< 20)="" as="" an="" integral.="" do="" not="" evaluate="" this="" integral.="" answer="" the="" following="" using="" only="" the="" standard="" normal="" table="" or="" the="" normalcdf="" calculator="" command="" for="" the="" standard="" normal="" distribution.="" (b)="" what="" is="" the="" probability="" that="" the="" daily="" use="" of="" electricity="" will="" be="" between="" 15.6="" and="" 21.3?="" (c)="" what="" is="" the="" probability="" that="" the="" daily="" use="" of="" electricity="" will="" be="" between="" 1="" and="" 2="" standard="" deviations="" from="" its="" mean="">