In a random sample of 325 residents of a community, 91 were very satisfied with the...
In a random sample of 325 residents of a community, 91 were very satisfied with the quality of trash collection. 25. Construct a 95% confidence interval of the proportion of residents who are very satisfied in the population. Report both the lower and the upper values of this interval, and round to 2 decimal places. 26. Construct a 99% confidence interval of the proportion of residents who are very satisfied in the population. Report both the lower and the upper values of this interval, and round to 2 decimal places.
Homework Answers
The sample proportion is:
#25 For 95% confidence level, critical value of z is 1.96. A 95% confidence interval of the proportion of residents who are very satisfied in the population is:
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#26 For 99% confidence level, critical value of z is 2.58. A 99% confidence interval of the proportion of residents who are very satisfied in the population is:
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