Purchase Solution

Confidence Interval and Mean Difference

Not what you're looking for?

Ask Custom Question

The director of a university's development center is interested in comparing the starting annual salaries of male and female students who recently graduated form the university and commenced full-time employment. The director has formed pairs of male and female graduates with the same major and similar grade point averages. Specifically, she has collected a random sample of 50 such pairs and has recorded the starting annual salary of each person. These data are provided below,

PROBLEM:

Construct a 99% confidence interval for the mean difference between similar male and female graduates of this university. Interpret your result.

Purchase this Solution
Solution Summary

The confidence intervals and mean difference for male and female graduates of a university is found. The solution uses 99% confidence intervals.

Solution Preview

Problem 9.23 with Data is attached in excel spread sheet format. The facts and problem have been set out below. I need help in setting up and solving this problem.

FACTS:

The director of a university's development center is interested in comparing the starting annual salaries of male and female students who recently graduated from the university and commenced full-time employment. The director has formed pairs of male and female graduates with the same ...

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.

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.

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.

View More Free Quizzes
Related BrainMass Solutions

  • Confidence Interval Estimate Between Means

    156047 Confidence Interval Estimate Between Means Confidence interval for Data1 & Data2. Using the following data, construct a 95% confidence level interval estimate for the difference between the mean of Data1 and Data2.

  • 95% confidence interval for mean differences

    277735 95% confidence interval What would be the 95% confidence interval for this difference? 95% CI = mean difference +/- 2(standard error of the difference) t = 5.185 df = 13201 mean dif = -.16 Std.

  • Cumulative weight loss: propranolol treatment

    Mean weight loss difference between the propranolol and control group = = 173 - 153 = 20 g) Provide a 95% confidence interval for the difference in mean weight loss between the propranolol and control group. 95% confidence interval for the difference

  • Confidence interval for the difference in mean scores

    14494 Compute a 95% confidence interval for the difference in mean scores An investigator at a nearby university wants to find out from a recent "math skills" test if there is any difference in scores between full-time and part-time students.

  • Confidence Interval for Mean Difference

    434532 Confidence Interval for Mean Difference. 1. 12 mature citrus trees of one variety and 15 of another gave means and standard deviations of their heights as 13.8 and 12.9 ft (means), and 1.2 and 1.5 ft (standard deviations).

  • Confidence Intervals

    85536 To find 99% confidence interval of mean difference in temperatures The table gives the average low tempatures in January and July for twelve cities.

  • Point Estimate and Confidence Interval

    limit= $11.68 Calculates the point estimate and confidence interval for the difference between the mean purchases of the users of the two credit cards.

  • Using Statistical Significance Tests

    Method 2) For a 95% confidence interval, zcrit = 1.96 Margin of Error of the difference = zcrit * (SE of the difference) = 1.96 * 0.0255 = 0.04998 Mean difference - (Margin of Error of the difference) = 0.08 - 0.04998 = 0.03002 Mean difference

  • Confidence interval for mean and Box Plot

    Confidence Interval The 99% Confidence interval for the average difference in mean time is given by (Please see the attached file) where (Please see the attached file) Details: Confidence interval for difference between means Confidence level

  • Confidence Interval-difference between means (small sample)

    Construct a 95%confidence interval for the difference M1-M2 between the mean processing time of computer 1,M1 , and the mean processing time of computer 2, M2. Then complete the table below.

View More Related Solutions