Problem regarding the average production employee

Reference no: EM13975008

1. Independent random samples of vehicles traveling past a given point on an interstate highway have been observed on Monday versus Wednesday. For 16 cars observed on Monday, the average speed was 59.4 mph, with a standard deviation of 3.7 mph. For 20 cars observed on Wednesday, the average speed was 56.3 mph, with a standard deviation of 4.4 mph. At the 0.05 level, and assuming normal populations, can we conclude that the average speed for all vehicles was higher on Monday than on Wednesday? What is the most accurate statement that can be made about the p-value for this test?

2. 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, can we conclude that the average production employee will complete the test more quickly the second time he or she takes it?

Reference no: EM13975008

Questions Cloud

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..

What external forces helped to persuade rawlings to change : What external forces helped to persuade Rawlings to change political and economic practices in Ghana? Do you think he would have made the changes he did without these external forces?

Significance in testing the engineer claim : Assuming normal populations with equal standard deviations, use the 0.025 level of significance in testing the engineer's claim.

Difference between the population means : Assuming normal populations with equal standard deviations, use the 0.10 level of significance in comparing the two designs. Construct and interpret the 90% confidence interval for the difference between the population means.

Driving with the rooftop carrier : Assuming normal populations with equal standard deviations, use the 0.01 level in examining whether pulling the trailer uses significantly less fuel than driving with the rooftop carrier.

User Account

All Pages