Can someone teach me how to answer the questions mentioned above? 1. Identify wh
ID: 3350040 • Letter: C
Question
Can someone teach me how to answer the questions mentioned above?
1. Identify which sampling technique used in each of the following situations. You are given a random list of all graduating seniors at the university You decide to survey every five names on the list and ask what types of activities they participated in while they were at the university. (a) 1b 6811cc3403 b1 mar (b) A university has 2000 males and 500 female faculty members. The university president wants to poll the opinions of a random sample of faculty members. The president decides to choose a random sample of 200 males and 50 females. (1 mark) Suppose that the city has 10 hospitals. Choose one of the 10 hospitals at random and interview all the nurses in that hospital regarding their job satisfaction. (c) (1 mark) 2. In a class of 45 students, 17 are taking Chemistry, 22 are taking Biology, and 19 take both subjects. Find the probability that a student chosen at c03403 78611a5d8 random (a) (b) (c) (d) takes Chemistry or Biology; takes Biology subject only; takes Chemistry, given that he does not takes Biology; does not takes Biology, given that he does not takes Chemistry (2 marks) (2 marks) (2 marks) (2 marks)Explanation / Answer
1.
Below are short description of some sampling techniques.
In Systematic sampling, every Nth record is selected from a list of population members.
In Stratified sampling, partition the population into groups (strata), obtain a simple random sample from each group (stratum).
In Cluster sampling, divide the population into groups (clusters), obtain a simple random sample of so many clusters from all possible clusters and obtain data on every sampling unit in each of the randomly selected clusters.
Based on the above description,
(a) The sampling is done for every five names on the list. So, the technique used is systematic sampling.
(b) There are 2 groups (strata) and the random sampling is done from each group. So, the technique used is stratified sampling.
(c) There are 10 hospitals and the random sampling is done for hospital and every sampling unit (nurses) in each of the randomly selected hospital is takne. So, the technique used is cluster sampling.