Hi Distribution: normal with µ = 35 and σ = 4.7 probability that daily production is: Continuous Curve: Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus P( 45.7 x < 46.2 =normalcdf(45.7, 46.2,35,4.7) = .0028 Wish You the Best in your Studies.