Subject: Statistical Analysis

Topic: Collection of Data

Direction: Answer and show the whole solution.

1.

SEATWORK A teacher wishes to study the learning difficulties in mathematics of students in a small high school where there are: 150 seniors, 163 juniors, 195 sophomores and 220 freshmen. 1. Compute the acceptable sample size from the school using the margin of error of 5% 2. Using equal allocation to select a stratified random sample size n = 248, how large a sample must be taken from each year level? 3. Using proportional allocation to have a sample size of n = 200, find the number of samples from each year level SEATWORK A professor wishes to conduct a study on the usefulness of statistics as perceived by his former students in Business Statistics numbering 1,445 students, 895 of which are male. 1. Compute the acceptable sample size with a margin of error of 2.5% 2. Using equal allocation to select a stratified random sample of 750 students, find the number of samples from each gendeh 3. Using proportional allocation to have a sample size of 700, how many men and how many women should be included in the sample