Activity 1: Instruction: Read and analyze the following situations. Determine whether the following statements have a known or unknown population variance. Write your answer on the space provided. Identify also the formula to be used to estimate the standard error of the mean by writing the symbol o?, when the population variance is known and the symbol s?when the population variance is unknown. Write your answer in a whole sheet of paper. Situation Answer Standard Error Formula 1. Because of Inclusive Education, learners with disabilities are also part of the normal students. Consider a population of the PWD learners consisting of 1, 2, 3, 4, and 5. Samples of size 2 are drawn from this population. 2. Given u = 15, s = 6 and n = 16 3. IQ scores are normally distributed with standard deviation o = 15 points. You wish to determine the u IQ of all students in Matiyaga National High School by taking a random sample of 16 students. 4. The general weighted average (GWA) of the Grade 7 applicants for admission in QSHS over the past 7 years has been consistently # = 92.78. This year a sample data of the applicant's GWA are 98, 89, 92, 95, 96, 90, 91, 92, 97 and 93 5. A finite population composed of six items whose values are 2, 3, 6, 7, 8, and 10. Samples of 3 items are drawn at random without replacement. ENGAGEMENT Activity 2: Read and analyze the following situations and supply the values of the following variables (if there is any). On the third column, write known on the space provided if the situation gives or can compute the value of the variance, otherwise write unknown. Identify also the formula to be used to estimate the standard error of the mean by writing the symbols ?, when the population variance is known and s?, when the population variance is unknown. Write your answer in a whole sheet of paper