Math help
posted by DeeDee 89 .
Could someone work one of these out so I can use as example.
A sample of 59 nightschool students' ages is obtained in order to estimate the mean age of nightschool students. x = 25 years. The population variance is 20.
(a) Give a point estimate for ì. (Give your answer correct to one decimal place.)
(b) Find the 95% confidence interval for ì. (Give your answer correct to two decimal places.)
Lower Limit
Upper Limit
(c) Find the 99% confidence interval for ì. (Give your answer correct to two decimal places.)
Lower Limit
Upper Limit
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