Homework Help: statistics

Posted by concy on Saturday, January 21, 2012 at 11:59pm.

Can someone guide me on how to solve this problem: A sample of 52 night students ages is obtained in order to estimate the mean age of night school students. sample mean = 25.9 years. the population variance is 23. Give a point estimate for the mean. Find the 95% confidence interval for the mean lower and upper and the 99% confidence interval

statistics - PsyDAG, Sunday, January 22, 2012 at 11:13am
95% = mean ą 1.96 SEm

SEm = SD/√n

Variance = SD^2

99% = mean ą 2.575 SEm

Answer this Question

Related Questions

statistics - A sample of 70 night-school students' ages is obtained in order...
statistics - the mean marks obtained by a group of 100 students was found to 49....
Statistics - find the 90% confidence interval for the variance and standard ...
Statistics - Suppose you administered an anxiety test to a large sample of ...
statistics - Suppose you administered an anxiety test to a large sample of ...
statistics - A random sample of 36 statistics students were asked to add a ...
statistics - Question 1 A school psychologist reports that the mean number of ...
statistics - If the ages of colleges students are normally distributed with a ...
statistics - The mean GPA (grade point averagE. of all male students at a ...
college statistic - A sample of 51 night-school students' ages is obtained ...

For Further Reading

First Name:
School Subject:
Answer: