Question 1197893
  Normal Distribution: µ = 55.7 and σ = 8.9  
Using hand-held TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
p( 65.45 ≤  x ≤ 73.55) = normcdf(65.45, 73.55, 55.7, 8.9) = .114 (Rounded to 3 decimal places.)