According to the insurance Institute of America, a family of four spends between $500 and $4,500 per year on all types of insurance. Suppose the money spent is uniformly distributed between these amounts. 1) Find the value of a= 2) Find the value of b= 3) Find the vlaue of h= 4) Find the mean time to fix the furnance = up to 2 d.p. 5) Find the standard deviation time to fix the furnance = up to 2 d.p. 6) Find the probability that a repairman take less than 3000 hours: P(x≤3000)= in % Blank 1: Blank 2 Blank 3 Blank 4 Blank 5 Blank 6