Based on the information given the profit per item is $2.90.
First step is to calculate the company profit
Profit=(100%-2%)×$5
Profit=98%×$5
Profit=$4.9
Second step is to calculate the profit per item
Profit per item=$4.9-($100×2%)
Profit per item=$4.9-$2
Profit per item=$2.90
Inconclusion the profit per item is $2.90.
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Options:
(A) participation bias
(B) Both selection and participation bias
(C) Selection bias only
(D) There is probably no source of bias in the study.
Answer:(C) Selection bias only
Explanation: Selection bias is a bias introduced during the selection process of a sample in such a way that the samples population does have or is not a proper representation of the entire population.
This type of bias is also known as SELECTION EFFECT.
Selection bias can also be described as the distortion of Statistical analysis due to the inappropriate sample collection process, if selection of sample is not adequately done,the conclusion or outcome of the study will be false.