4.30 For the data 1.0, 2.3, 4.2, 7.1, 10.4, use the most approximate procedure to test the null hypothesis that the distribution is

(a) Exponential FX(x) ¼ 1  ex=b (estimate b by x)

(b) Normal In each part, carry the parameter estimates to the nearest hundredth and the distribution estimates to the nearest ten thousandth.