A genetic model predicts that offspring from a certain mouse cross should occur in a ratio of 12 black : 3 gray : 1 white. When the cross was performed, the offspring actually followed a ratio of 70 black : 22 gray : 8 white. Perform all 7 steps of the appropriate hypothesis test to assess the validity of the genetic model, using = 0.05. Show your work in calculating the test statistic and P-value. Be sure your interpretation includes context (genetic model, offspring color)