Confidence the test score at a school

Reference no: EM1398888

The administrator of a school board in a large country was analyzing the average mathematics test scores in the schools under her control. She noticed that there were dramatic differences in scores among the schools. In an attempt to improve the scores of all the schools, she decided to determine the factors that account for the differences. accordingly, she tool a random sample of 40 schools across the country and, for each, determined the mean test score last year, the percentage of teachers in each school who hold at least one university degree in mathematics, the mean age, and the mean annual income (in $thousands) of mathematics teachers. Data are in file xr17-09. Use a 5% significance level.

(a) Conduct a regression analysis to develop the equation.

(b) Is the model valid?

(d) Predict with 95% confidence the test score at a school where 50% of the mathematics teachers have mathematics degrees, the mean age is 43, and the mean annual income is $48,30.

Reference no: EM1398888

Questions Cloud

Relationship between mortgage rates and housing starts : What do the coefficients of the regression line tell you about the relationship between mortgage rates and housing starts?

Define pros and cons of using genetically engineered : in your own words, summarize the pros and cons of using genetically engineered insects to control pests. Determine if you would be for or against the use of genetically engineered insects in your neighborhood, and explain why.

Explain positive and negative symptoms of schizophrenia : Describe the different theories that are thought to explain the biological basis of both the positive and negative symptoms of schizophrenia.

Illustrate what are your thoughts about these two methods : He wants to tax all earned income at a mere 20% rate and not tax capital gains, dividends or estates. Illustrate what are your thoughts about these two methods?

Confidence the test score at a school : Predict with 95% confidence the test score at a school where 50% of the mathematics teachers have mathematics degrees, the mean age is 43, and the mean annual income is $48,30.

Discuss the challenges that modelo faces its competitors : Discuss the challenges that Modelo faces its competitors InBev and explain how it might respond strategically to the industry giant.

How to describe differential sentencing for crack cocaine : How can you describe differential sentencing for crack cocaine and powdered cocaine? In opinion, is particular population which might use crack cocaine been targeted?

Implications of regulation in nursing services : The Role of Government in Health Care Markets - Health Policy and Economics - Do you think this current state of regulation is appropriate? Why or why not? What problems have arisen because of regulation or the lack thereof?

Do you think the playground should be repaired and expanded : Many people believe this playground is too small and in need of repair. Do you think the playground should be repaired and expanded even if that means raising the entrance fee to the park?

User Account

All Pages