An article in Growth: A Journal Devoted to Problems of Normal and Abnormal Growth [Comparison of Measured

An article in Growth: A Journal Devoted to Problems of Normal and Abnormal Growth [€œComparison of Measured and Estimated Fat-Free Weight, Fat, Potassium and Nitrogen of Growing Guinea Pigs€ (1982, Vol. 46(4), pp. 306€“321)] reported the results of a study that measured the body weight (in grams) for guinea pigs at birth.

(a) Test the hypothesis that mean body weight is 300 grams. Use α = 0.05.

(b) What is the smallest level of significance at which you would be willing to reject the null hypothesis?

(c) Explain how you could answer the question in part (a) with a two-sided confidence interval on mean body weight.

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