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 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. If the p-value of the appropriate test is 0.00412, the conclusion is "there is sufficient evidence to say that the average drying time of a certain brand of latex paint is NOT 4.5 hours. II. Suppose that the 95% confidence interval for the true mean drying time of a certain brand of latex paint is [3.25,4.32]. The NULL HYPOTHESIS WILL BE REJECTED since the hypothesized value of the mean of 4.5 is not within the constructed interval.    A. I only B. II only C. Both I and II D. Neither I nor II

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 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. If the p-value of the appropriate test is 0.00412, the conclusion is "there is sufficient evidence to say that the average drying time of a certain brand of latex paint is NOT 4.5 hours. II. Suppose that the 95% confidence interval for the true mean drying time of a certain brand of latex paint is [3.25,4.32]. The NULL HYPOTHESIS WILL BE REJECTED since the hypothesized value of the mean of 4.5 is not within the constructed interval. 
 
A. I only
B. II only
C. Both I and II
D. Neither I nor II
 
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