Determine whether the sampling method is random, simple random, or neither. a) In a group of 100 males and 100 females, 40 participants are selected for a survey: 20 males and 20 females. b)Student ID numbers are put into a computer and 20 of these students are randomly selected for a survey c)There are 10 bags of spinach per box coming from Green Acres Spinach Company. The health inspector wants to sample 40 bags of spinach. She randomly selects 4 boxes from the 100 boxes being shipped that day and tests each bag in the selected boxes for the presence of the bacteria E.coli.
Determine whether the sampling method is random, simple random, or neither. a) In a group of 100 males and 100 females, 40 participants are selected for a survey: 20 males and 20 females. b)Student ID numbers are put into a computer and 20 of these students are randomly selected for a survey c)There are 10 bags of spinach per box coming from Green Acres Spinach Company. The health inspector wants to sample 40 bags of spinach. She randomly selects 4 boxes from the 100 boxes being shipped that day and tests each bag in the selected boxes for the presence of the bacteria E.coli.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Transcribed Image Text:QUESTION 9
Determine whether the sampling method is random, simple random, or neither.
a) In a group of 100 males and 100 females, 40 participants are selected for a survey: 20 males and 20 females.
b)Student ID numbers are put into a computer and 20 of these students are randomly selected for a survey
c)There are 10 bags of spinach per box coming from Green Acres Spinach Company. The health inspector wants to
sample 40 bags of spinach. She randomly selects 4 boxes from the 100 boxes being shipped that day and tests each bag
in the selected boxes for the presence of the bacteria E.coli.
Expert Solution
Step 1
Hint:
The random sample is the sample where sample units are selected randomly.
A simple random sample is a sample where the probability of each unit is the same as being selected in the sample.
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