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08.10.2020 •
Mathematics
Complete the tasks and answer the questions. Use the 2SD method to estimate the true proportion of the population of your city that dislikes the taste of cilantro. State the resulting confidence interval in both forms – the interval notation and the sample proportion ± the margin of error notation. Write the interpretation of this confidence interval. Use the theory-based method to estimate the true proportion of the population of your city that dislikes the taste of cilantro with a 95% confidence interval. State the resulting confidence interval in both forms – the interval notation and the sample proportion ± the margin of error notation. Write the interpretation of this confidence interval. Use the theory-based method to estimate the true proportion of the population of your city that dislikes the taste of cilantro with an 88% confidence interval. State the resulting confidence interval in both forms – the interval notation and the sample proportion ± the margin of error notation. Write the interpretation of this confidence interval. Your initial post should be made before the end of the fourth day (Saturday) of the module to receive full credit. Return at least once later in the module to comment on at least one classmate's posts. Do NOT "post and run" – making all of your posts on the same visit. You need multiple visits to the Discussions to gain multiple perspectives by reading all of the posts and replies.
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Ответ:
Complete Question
The complete question is shown on the first uploaded image
Using 2SD Method
The confidence interval is
The interval notation :
The interval notation and the sample proportion ± the margin of error
notation:
The interpretation
There is 95% confidence that the true proportion of those that dislike cilantro lie within the upper(0.212) and the lower(0.108) limit of the calculate confidence interval
Using theory-based method
The 95% confidence interval is
The interval notation :
The interval notation and the sample proportion ± the margin of error
notation:
The interpretation
There is 95% confidence that the true proportion of those that dislike cilantro lie within the upper(0.211) and the lower(0.109) limit of the calculate confidence interval
Using theory-based method
The 88% confidence interval is
The interval notation :
The interval notation and the sample proportion ± the margin of
error notation:
The interpretation is
There is 88% confidence that the true proportion of those that dislike cilantro lie within the upper(0.200 ) and the lower(0.120) limit of the calculate confidence interval.
Step-by-step explanation:
From the question we are told that
The number sample size is n = 200
The number of people that dislike cilantro is k = 32
Generally the sample proportion is mathematically represented as
=>
=>
Generally 2SD confidence interval is mathematically represented as
substituting value
=>
This can also be represented as
=>
Generally this confidence interval can be interpreted as
There is 95% confidence that the true proportion of those that dislike cilantro lie within the upper and the lower limit of the calculate confidence interval
Using theory-based method estimate 95% confidence interval
Generally from the question the confidence level is 95% hence the level of significance is calculated as
=>
The critical value of from the normal distribution table is
Generally the confidence level using theory base method is
=>
This can also be represented as
=>
Generally this confidence interval can be interpreted as
There is 95% confidence that the true proportion of those that dislike cilantro lie within the upper(0.211) and the lower(0.109) limit of the calculate confidence interval
Using theory-based method estimate 88% confidence interval
Generally from the question the confidence level is 95% hence the level of significance is calculated as
=>
The critical value of from the normal distribution table is
Generally the confidence level using theory base method is
=>
This can also be represented as
=>
Generally this confidence interval can be interpreted as
There is 88% confidence that the true proportion of those that dislike cilantro lie within the upper(0.200 ) and the lower(0.120) limit of the calculate confidence interval
Ответ: