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17.10.2019 •
Mathematics
Approximately how many 49's are there in 300?
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Ответ:
The 95% confidence interval for the true proportion of internet users who are women in Europe is (0.3159, 0.3841).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
A recent study of 750 Internet users in Europe found that 35% of Internet users were women.
This means that
95% confidence level
So , z is the value of Z that has a pvalue of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the true proportion of internet users who are women in Europe is (0.3159, 0.3841).