a) A sample of 28 cows slaughtered at the mariakani slaughter house reported a variance of 18.76 kg. at 5% level of significance does this indicate the variance is less than 17.5 kg. [5 Marks] b) In a population consisting of 50 sates a sample of 17 states had these taxes recorded (in million dollars) 112 120 98 55 71 35 99 124 64 150 150 55 100 132 20 70 93 Construct a 99% confidence interval. [5 Marks]