Theory on Estimating the Population Mean

Estimating the Mean:

We are estimating the population mean, mu, not the sample mean, x bar.

Population Standard Deviation Known:

Whenever population standard deviation or sigma is identified, then mean has the normal (Z) distribution.

The maximum error of estimation is given by the formula for E is as shown below. The Z here is the z-score obtained from the normal table, or the bottom of t-table as described above. The z-score is a factor of level of confidence; therefore you might get in the habit of writing it later to the level of confidence.

E = Zα/2 (σ/√n)

Once you have calculated E, now it is recommended to save the memory on your calculator. On TI-82, an excellent choice would be the letter E. The main reason for this is that the limits for the confidence interval are now found by adding and subtracting the maximum error of the estimate from or to the sample mean.

Latest technology based Statistics Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Statistics help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Statistics, project ideas and tutorials. We provide email based Statistics help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Statistics. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Statistics Homework help and assignment help services. They use their experience, as they have solved thousands of the Statistics assignments, which may help you to solve your complex issues of Statistics. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.