Question

#9. Consider exercise 6 of Chapter 2. Suppose we calculated 95% confidence intervals for the population mean under each treatment. (I don’t want you to actually calculate them.) Which treatment(s) would have the widest and narrowest confidence intervals?

EXER Serum T3, (ng/dl) × 10-1 Treatment Premolt Fasting 60 g bran 197.18, 207.31, 177.50, 80 g bran 102.93, 117.51, 119.92, 112.01, 101.10 Laying mash 82.94, 83.14, 89.59, 87.76, 94.09, 90.45, 99.38, 73.56, 98.81, 103.55, 115.23, 129.06, 117.61 rite the linear statistical model for this study, and explain the model components. ate the assumptions necessary for an analysis of variance of the data. mpute the analysis of variance for the data. mpute the least squares means and their standard errors for each treatment. How h some chickens from the experiment affected the estimates of the means? mpute the 95% confidence interval estimates of the treatment means. st the hypothesis of no differences among means of the five treatments with the F 5 level of significance

Answer 1

We use Excel to solve this question-

The treatment 60 g bran have the widest confidence interval.
The treatment Laying mash have the narrowest confidence interval.