The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club.She would now like to determine whether or not the mean age of her customers is greater than 30.If so,she plans to alter the entertainment to appeal to an older crowd.If not,no entertainment changes will be made.The appropriate hypotheses to test are: A)H₀: ? $\ge$ 30 versus H₁: ? $\lt$ 30. B)H₀: ? $\le$ 30 versus H₁: ? $\gt$ 30. C)H₀: x? $\ge$ 30 versus H₁: x? $\lt$ 30 . D)H₀: x? $\le$ 30 versus H₁: x? $\gt$ 30 .

Question

Quizplus · Accepted Answer

Choice B is the most appropriate since the null hypothesis states that the mean age is less than or equal to 30, and the alternative hypothesis states that the mean age is greater than 30. This is the appropriate setup for a one-tailed hypothesis test with a directional alternative hypothesis. Choices A, C, and D are all incorrect as they include incorrect symbols and/or wording for the hypotheses.

The Owner of a Local Nightclub Has Recently Surveyed a Random