Problem regarding the equality of variances between the iqs

Assignment Help Basic Statistics

Reference no: EM13985502

The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7. Test for equality of variances between the IQs of the two groups at α = 0.02.

Reference no: EM13985502

Questions Cloud

Test the hypothesis that choice of major : Test the hypothesis that the choice of the major by undergraduate students in this university is independent of their gender. Use α = 0.01.

Opinion on collective bargaining by teachers : The following table gives the opinion on collective bargaining by a random sample of 200 employees of a school system, belonging to a teachers' union.

Determining the normal distribution : Assuming that the samples come from a normal distribution: Test that the mean SAT score for math in 1999 is greater than that in 1989 at α = 0.05. Assume the variances are equal.

What is the total liquid and vapor flow rates : Determine whether this processes is a stripping process or an absorption process and what is the total liquid and vapor flow rates at the entrance and exit of the tower?

Problem regarding the equality of variances between the iqs : The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7.

Difference between the two population means : At the conclusion of the instructional period, a reading test gave results y1 = 74, y2 = 71, s1 = 9, and s2 = 10. What is the attained signi?cance level if you wish to see if there is evidence of a real difference between the two population means?..

Problem regarding the sample standard deviation : A random sample of 40 of these batteries was tested, resulting in a sample mean life of 41 months with a sample standard deviation of 16 months. Test at α = 0.01 whether the manufacturer's claim is correct.

Determining the average price of a gallon of gas : According to the Bureau of Labor Statistics (1996), the average price of a gallon of gasoline in all U.S. cities in the United States in January 1996 was $1.129. A later random sample in 24 cities found the mean price to be $1.24 with a standard d..

Annual expenditure per consumer unit : Assuming that the average annual expenditure of all consumer units was $30,692 in 1994, test at the 5% signi?cance level whether the annual expenditure per consumer unit had really increased from 1994 to 1995.

User Account

All Pages