Suppose you have a sample of data, where
and n = 25. You want to create a 99% confidence interval for the
mean. Assume the population standard deviation is 4.
a)What is the critical value for the confidence interval?
b)What is the confidence interval? Round to 3 decimal places.
c)What is the critical value used for the confidence interval?
d)What is the margin of error used for the confidence interval? Round to 3 decmial places.
e)Fill in the confidence interval. Round to 3 decimal places.
Suppose you have a sample of data, where and n = 25. You want to create...
A) Sample of size 15 is taken from among a population of egrets and used to calculate a 99% confidence interval for the true average wingspan in the population. Suppose the sample standard deviation is calculated to be s =6.2. What is the margin of error for the confidence interval? Round your answer to 3 decimal places. B) Suppose you are asked to construct a 99% confidence interval for an unknown population mean μ. The population standard deviation is unknown...
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