1.3 Khayelitsha Gas & Paraffin suppliers have a 300-gallon tank that is filled at the beginning of each week. The weekly demand shows a relative frequency behaviour that increases steadily up to 200...

Extracted text: 1.3 Khayelitsha Gas & Paraffin suppliers have a 300-gallon tank that is filled at the beginning of each week. The weekly demand shows a relative frequency behaviour that increases steadily up to 200 gallons and then levels off between 200 and 300 gallons. If Y denotes weekly demand in hundreds of gallons, the relative frequency of demand can be modelled by: y <0 y,=""><><1><>< 1.5="" 0,="" elsewhere="" y="" 2="" 0s="" ys1="" f(y)="{1," f(y)="y" -1/2=""><><1.5 1="" y="">1.5 1.3.1 Use F(y) to find P(0 < y="">< 0.3)="" and="" use="" f(y)="" to="" find="" and="" validate="" your="" answer.="" 1.3.2="" find="" p(0.5="">< y="">< 1.4).="" 1.4="" daily="" total="" solar="" radiation="" for="" a="" specified="" location="" in="" cape="" town="" in="" january="" has="" a="" probability="" density="" function="" given="" by="{1/9)(4" –="" y)²,5="">< ys7="" 0,="" fg)="" elsewhere="" with="" measurements="" in="" hundreds="" of="" calories.="" find="" the="" expected="" daily="" solar="" radiation="" for="" january.="" find="" the="" standard="" deviation="" and="" interpret="" your="">