Nation mathematics assessment test

Reference no: EM13100418

A random sample of 77 eighth grade students' scores on a nation mathematics assessment test has a mean score of 278 with a standard deviation of 31. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 270. At infinity of .13, is there enough evidence to support the administrators claim? Find the standardized test statistic z and it corresponding area.

Reference no: EM13100418

Questions Cloud

Test value for the claim of department store : An average department store sells 350 men's suits per year. The men's suit departments at a particular national chain of stores claim they sell more than the industry average. In 35 of their stores, they sold, on the average, 430 suits per year wi..

Case study - alternative work arrangements : Various alternative work arrangements exist for use in businesses and other types of organizations; included among the options are compressed work weeks, flexible work schedules, telecommuting, and job sharing.

Explain good leadership qualities for task completion : Good leadership qualities by putting the requirement for task completion before all else? How else could supervisor have reacted? How does this attitude influence team performance?

Estimate the optimal values of decision variables : Solve the problem using graphical linear programming and answer the questions that follow. What are the optimal values of the decision variables and Z?

Nation mathematics assessment test : A random sample of 77 eighth grade students' scores on a nation mathematics assessment test has a mean score of 278 with a standard deviation of 31.

Calculate potential energy of the compressed spring : A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. The mass of the cart is 300 grams. The angle of incline of the track is 20º.

Create study on bioecological model of human development : Create a comprehensive study on The Bioecological Model of Human Development. Bioecological Model of Human Development has four basic systems.

Identify the type of bias or error : A randomized controlled trial was implemented to assess whether a human papillomavirus (HPV) vaccine prevents pre-cursors of cervical cancer in women between the ages of 15 and 25 years.

What is the ratio of the radii of their circular paths : a proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths?

User Account

All Pages