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Neyman-Pearson Significance Testing: Critical Regions

What I'm looking at immediately is "Using the .05 cutoff figure, find an appropriate critical region for testing the null hypothesis 'theta is greater than or equal to .154 against the alternate hypothesis 'theta is less than .154' and provide a Neyman-Pearson analysis.". Background facts for the problem: In the county, 15.4 % of certified teachers were African-American. Of the last 405 hires, the school district had hired only 15 African-American teachers. In a discrimination suit, the plaintiff argued that this was unlikely to happen by chance. Thus the significance testing. Background information on how I need the solution: I'm REALLY looking for a step-by-step explanatio... click for more

Subject:

Statistics

Topic:

All Topics

Posting ID:

4562

OTA ID:

103060

View Details $1.99 Download Add to Cart

Subject:

Statistics

Topic:

All Topics

Posting ID:

4567

OTA ID:

103185

View Details $1.99 Download Add to Cart

Hypothesis Testing - Compute the statistical test using the z test and decide what to do with the null.

A study was conducted on the annual incomes of public school teachers in the state of x, in metropolitan area of less than 100,000, and in metropolitan areas having a population of over 500,000. Some sample statistics are: The group has the following characteristics: Less than 100K Population 45 Mean $31,290 Standard Deviation $1,060 More than 500K Population 60 Mean $31,330 Standard Deviation $1,900 Test the hypothesis that the annual income of teachers in areas of more than 500,000 is significantly more than those in areas of less than 100,000. Use the 5% level of risk.

Subject:

Statistics

Topic:

All Topics

Posting ID:

4581

OTA ID:

103060

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Hypothesis Testing-Compute the statistical test using the z test and decide what to do with the null.

A sample of 40 households with school-age children in Middletown was randomly selected. The mean length of time was 7.6 years, with a standard deviation of 2.3 years. A sample of 55 households in Brockton revealed the mean length of time was 8.1 years, with a standard deviation of 2.9 years. At the .05 level of significance, can we conclude the Middletown students stayed in their districts less time than the Brockton students? Use the five-step hypothesis testing procedure.

Subject:

Statistics

Topic:

All Topics

Posting ID:

4582

OTA ID:

103060

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Hypothesis Testing-Compute the statistical test using the z test and decide what to do with the null. Also state the Research Hypothesis and the Null Hypothesis.

A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second source. The sample mean was 99 and the standard deviation was 6. Conduct a test of the hypothesis using the .04 level of significance.

Subject:

Statistics

Topic:

All Topics

Posting ID:

4585

OTA ID:

103060

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