The output above is for the R Seatbelts data set where Y1 = drivers = number of drivers killed or seriously injured, Y2 = front = number of front seat passengers killed or seriously injured, and Y3 = back = number of back seat passengers killed or seriously injured. The predictors were x2 = kms = distance driven, x3 = price = petrol price, x4 = van = number of van drivers killed, and x5 = law = 0 if the law was in effect that month and 1 otherwise. The data consists of 192 monthly totals in Great Britain from January 1969 to December 1984, and the compulsory wearing of seat belts law was introduced in February 1983. a) Do the MANOVA F test.
b) Do the F4 test.
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