Direction: Read the following problems carefully. Write the null and alternative hypotheses (both in words and symbol) and identify the test-statistic to be used. Use a separate sheet of paper. 1. A teacher conducted a study to know if blended Ieaming improves the students' performances. A class of 25 students of Grade 11 was surveyed and found out that their mean score was 83 with a standard deviation of 4. A study from other country revealed that p = 80 with a standard deviation of 3. Test the hypothesis at 0.10 level of significance. 2. A certain group of welfare recipients receives relief goods with a mean amount of Php 500 per week. A random sample of 75 recipients is surveyed and found that the mean amount of relief goods they received in a week is Php 600 and a standard deviation of Php50.00. Test the claim at 1% level of significance is not Php 500 per week and assume that the population is approximately normally distribute