Confidence interval for difference between population means

Reference no: EM13975012

For a sample of 48 finance majors, the average time spent reading each issue of the campus newspaper is 19.7 minutes, with a standard deviation of 7.3 minutes. The corresponding figures for a sample of 40 management information systems majors are 16.3 and 4.1 minutes. Using the 0.01 level of significance, test the null hypoth- esis that the population means are equal. Using the appro- priate statistical table, what is the approximate p-value for this test? Construct and interpret the 99% confidence interval for the difference between the population means.

Reference no: EM13975012

Questions Cloud

Effective in increasing engine rpm : The idling speed of 14 gasoline-powered genera- tors is measured with and without an oil additive that is designed to lower friction. With the additive installed, the mean change in speed was 123 revolutions per minute (rpm), with a standard d..

How much energy must be stored in the capacitor : The magnet rotates at angular frequency w. Write an expression for the flux through a single loop as a function of time in terms of magnet area, coil area, and field strength. (It should include a sine function.)

How the scientific method was involved : how the scientific method was involved, and how you think the development is relevant to your life or to human life in general

Difference between the population means : Using the 0.05 level of significance, test the null hypothesis that the population means are equal. Using the appropriate statis- tical table, what is the approximate p-value for this test? Construct and interpret the 95% confidence interval for..

Confidence interval for difference between population means : Using the appropriate statistical table, what is the approximate p-value for this test? Construct and interpret the 99% confidence interval for the difference between the population means.

Paper - americans with disabilities act : Ethics in Assessment Paper, Topic: Americans with Disabilities Act of 1990 Employment testing materials and procedures must be essential to the job and not discriminate against persons with handicaps

Genotypic ratio of offspring phenotypic ratio of offspring : When you record phenotypic ratios for a monohybrid cross, there are only two possible phenotypes - either the dominant phenotype or the recessive phenotype. So you do not need to indicate the phenotype, simply put the dominant # first, followed ..

Problem regarding the average production employee : A sample of 25 production employees has been tested twice on a standard test of manual dexterity. The average change in the time required to finish the test was a decrease of 1.5 minutes, with a standard deviation of 0.3 minutes. At the 0.05 level..

User Account

All Pages