Normal distribution of commuting times

Reference no: EM13995506

The accompanying data represent one-way commuting times (minutes) for a simple random sample of 15 persons who work at a large assembly plant. The data are also in file XR09082. Assuming an approximately normal distribution of commuting times for those who work at the plant, construct and interpret the 90% and 95% confidence intervals for the mean.

21.7	26.8	33.1	27.9	23.5
39.0	28.0	24.7	28.4	28.9
30.0	33.6	33.3	34.1	35.1

Reference no: EM13995506

Questions Cloud

Confidence intervals for the population mean : For the following simple random sample of house- hold incomes (thousands of dollars) from a large county, construct and interpret the 90% and 95% confidence intervals for the population mean. The data are also in file XR09087.

What is the magnitude of the angular momentum of the system : What is the magnitude of the angular momentum of the system before the collislon Mout an axis through O? What is the moment of inertia of the system about an axis through O after the projectile sticks to the rod?

Confidence interval for the current process mean : Construct and interpret the 95% confidence interval for the current process mean. Discuss the possibility that the machine may be in need of adjustment to correct the process mean.

What is the magnitude of the total net magnetic field bnet : B1 at point P has a direction that is perpendicular to the line joining 1 and P and B2 at point P has a direction that is perpendicular to the line joining 2 and P. Also Bnet = B1 + B2. The +x-direction is to the right and +y-direction is toward ..

Normal distribution of commuting times : Assuming an approximately normal distribution of commuting times for those who work at the plant, construct and interpret the 90% and 95% confidence intervals for the mean.

Average deduction for the population : These taxpayers claimed an average of 9,922 in medical expenses for the year. Assume the population standard deviation for these deductions was $2,400. Construct confidence intervals to estimate the average deduction for the population with the fo..

Focusing on protection of human participants : Prepare a critical analysis of a quantitative study focusing on protection of human participants, data collection, data management and analysis, problem statement, and interpretation of findings.

Explain the role of gender conversational rituals : Explain the role of gender conversational rituals. Elaborate on the topic and share several ways you, or someone you know, has had to adapt to gender differences in communication

Determine and interpret the p-value for the test : Determine and interpret the p-value for the test. Source: Bureau of the Census, Statistical Abstract of the United States 2009, p. 163.

User Account

All Pages