Need help. Thanks

What I Can Do Problem Solving: 1. The average monthly salary of the 200 workers of a construction site is Php 9800.00 with a standard deviation of Php300. If you are going to make a research with 5% margin of error, how many samples must be included in your study? Using the computed sample size, solve the mean, variance, and standard deviation of the sampling distribution. 2. The following are the scores of 4 students: (8, 6, 9, 5). If sample size 2 is drawn from this population, construct the sampling distribution table, and calculate the following: a. Mean of the sampling distribution of sample means. b. Variance of the sampling distribution of sample means. c. Standard deviation of the sampling distribution of sample means. 3. A random sample of 75 tests is obtained from a population with mean of 205 and standard deviation of 53. Describe the sampling distribution for sample means by calculating the mean, variance, and standard deviation of the sample means.Additional Activities Ask the body temperature of 8 of your friends or classmates or relatives (Note: must be different temperature reading). Construct the sampling distribution table taking sample size 2 and solve the following: a. Mean, variance, and standard deviation of the population b. Mean, variance, and standard deviation of the sampling distribution of sample means