It is of interest to determine if the average drying time of a certain brand of latex paint is not 4.5 hours. To do this, 15 cans of the branded latex paint were selected. Normality test of drying...

Normality test of drying time of the branded latex paint:

Shapiro-Wilk normality test

data: drying time

W = 0.9691, p-value = 0.1396

Which of the following is(are) TRUE at 5% level of significance? I. The assumption on the normality of drying time of the branded latex paint is NOT SATISFIED. II. To determine if the average drying time of a certain brand of latex paint is not 4.5 hours, a NONPARAMETRIC TEST is more appropriate to use than a parametric test.

Choices: I only, II only, Both I and II, Neither I nor II