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Which of the following are assumptions for the Significance Test for the Proportion?
- Data is Categorical;
- Data is from a convenience sample;
- Data is from a Normal Distribution
- nPo and n(1-Po) are both greater than 15
- Data is Quantitative.
- Data is from a random sample.
- nphat and n(1-phat) are both the greater than 15
Answer: Data is from a random sample.
Explanation
The assumptions for a significance test for the proportion are:
- Data is from a random sample.
- [Sample is sufficiently large, which can be assumed to be true when nPo > 15 and n(1-Po) > 15. A significance test for a proportion can be used for both quantitative and categorical data.
We then note that the actual assumptions are:
- Data is from a random sample
- nPo and n(1-Po) are both greater than 15
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