IDENTIFYING APPROPRIATE REJECTION REGION FOR A GIVEN LEVEL OFbSIGNIFICANCE

PERFORMANCE TASK Activity 3. Sketch Me! A. Directions: Determine the critical values and the appropriate rejection region and sketch the sampling distribution. 1. A survey report shows that a customer in the drive-thru lane of one fast food chain spends eight minutes to wait for his/her order. A sample of 23 customers at the drive thru lane showed mean of 6.5 minutes with a standard deviation of 3 minutes. Is the waiting time at the drive thru lane less than that of the survey made? Use 0.05 significance level. 2. A banana plantation owner claims that the mean weight of their banana is 120 grams with a standard deviation of 16 grams. Data generated from a sample of 45 bananas randomly selected indicated a mean weight of 125.5 grams per banana. Is there sufficient evidence to reject the company's claim? Use a = 0.05. Hypotheses Rejection Region Decision 3. Ho:H = 50 Hail # 50 Test Value = 1.45 Critical value = 1 1.96 4. Ho:H = 50 Ha:H > 50 Test Value = 1.97 Critical value = 1.65 5 Ho:H = 50 Ha:H