NOTE: ANSWERS MUST BE DIGITALIZED NOT HANDWRITTEN BECAUSE I AM HAVING A HARD TIME SEEING MESSY HANDWRITING

*SHOW THE COMPLETE SOLUTION

Activity 4. Think Critically! Directions: Identify the critical value of each given problem. Find the rejection region and sketch the curve on a separate sheet of paper. 1. Ho:M = 90 Ha: H # 90 The sample mean is 69 and sample size is 35. The population follows a normal distribution with standard deviation 5. Use a = 0.05. 2. A survey reports the mean age at death in the Philippines is 70.95 years old. An agency examines 100 randomly selected deaths and obtains a mean of 73 years with standard deviation of 8.1 years. At 1% level of significance, test whether the agency's data support the alternative hypothesis that the population mean is greater than 70.95. 3. The mean time costumer waits in line before checking in a grocery chain is less than 10 minutes. To verify the performance of the store, the obtaining mean time of 25 costumers is 9.5 minutes with standard deviation of 1.6 minute. Use these data to test the null hypothesis that the mean time is 10 minutes, at 0.01 level of significance