A random sample of 10 observations was drawn from a large normally distributed population. The data is below.
10 18 17 13 17 18 10 10 19 15
Test to determine if we can infer at the 0.01 significance level that the population mean is not equal to 15, filling in the requested information below.
(a) The value of the standardized test statistic: -0.603
Note: For the next part, your answer should use interval notation. An answer of the form (-∞, a) is expressed (-infty, a), an answer of the form (b, ∞) is expressed (b, infty), and an answer of the form (-∞, a) U (b, ∞) is expressed (-infty, a)U(b, infty).
(b) The rejection region for the standardized test statistic: (-infty,-2.576)U(2.576,infty)
(c) Your decision for the hypothesis test:
A. Reject H0.
B. Do Not Reject H1.
C. Reject H1.
D. Do Not Reject H0.