Purchase Solution

Confidence Interval for Mean: Math achievement scores

Not what you're looking for?

Ask Custom Question

The math achievement scores for 15 female students who just finished high school in the U.S. are as follows.....433, 563, 418, 389, 411, 492, 520, 458, 442, 479, 398, 494, 454, 337, 514

a) Are the scores normally distributed? Explain?

B) Mean =
Variance =
Standard Deviation =

C) Construct a 95% C.I. for the mean achievement score for females

Purchase this Solution

Solution Summary

The solution provides step by step method for the calculation of confidence interval for population mean. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.

Solution Preview

Please see the attachments.

Confidence Interval
The math achievement scores for 15 female students who just finished high school in the U.S. are as follows.....433, 563, 418, 389, 411, 492, 520, 458, 442, 479, 398, 494, 454, 337, 514

a) Are the scores normally distributed ? Explain?
We can ...

Purchase this Solution


Free BrainMass Quizzes
Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.