mommy562
17.12.2020 •
Mathematics
Which sampling method is the most appropriate in studying the opinions of stay-at-home mothers in all towns across the country?
Simple random sampling, because the people in the sample are accessible and available
Stratified sampling, because there are specific subgroups to investigate
Systematic sampling, because of the ease in selecting every nth person
Cluster sampling, because the studied population is spread across a wide area such that simple random sampling would be difficult to implement
All the above sampling methods
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Ответ:
(E) 0.83
Step-by-step explanation:
We will solve it using conditional probability.
Let A be the event that a TV show is successful.
P(A) = 0.5
A' be event that the show is unsuccessful
P(A') =0.5
Let B be the event that the response was favorable
P(B) = 0.6
Let B' be the event that the response was unfavorable/
P(B') = 0.4
P(A∩B) = 0.5 and P(A∩B') = 0.3
We need to find new show will be successful if it receives a favorable response.
P(A/B) =
= 0.5/0.6
= 0.833