B

A random sample of 12 second-year university students enrolled in a business statistics course was drawn. At the course's completion, each student was asked how many hour in statistics. The data are listed below. 21 14 20 15 27 27 16 24 16 16 28 17 It is known that the population standard deviation is 8. The instructor has recommended that students devote 2 hours per week for the duration of the 12-week semester, for a to determine whether there is evidence at the 0.05 significance level that the average student spent less than the recommended amount of time. Fill in the requested information b 20 08 - 24 A. The value of the standardized test statistic: 8 V12 Note: For the next part, your answer should use interval notation. An answer of the form (-co, a) is expressed (-infly, a), an answer of the form (b, co) is expressed (b, infly), a (-oo, a) U (b, oo) is expressed (-infly, a)U(b, infty) B. The rejection region for the standardized test statistic: (1.64,00)