STATISTICS AND PROBABILITY 4 Quarter WEEK NO.4 LEARNING TASK Name : Section: Direction: 1. Determine the test statistic used. Then, find the value of the following based on the given information. 2. Draw a conclusion from the given information: 1. Ho: H = 80 Ha: H # 80 The sample mean is 90, the sample size is 45, and the standard deviation is 8. Use a = 0.01. 2. Ho: H 7.5 The sample mean is 7.8 and the sample size is 50. The population follows a normal distribution with standard deviation of 1.23. Use a = 0.05. 3. Ho: M = 215 Ha: M # 215 The population is approximately normal. The sample mean is 220.5, the sample standard deviation is 15.11, and the sample size is 25. Use a = 0.05. 4. Ho: M 2 116.12 Ha: H