# statistics

A random sample of 10 observations is selected from the first normal population and 8 from the second normal population. For the hypothesis, H0: ¦Ì1 ¡Ü ¦Ì2, (.01 significance level), what is (are) the critical value(s)? (Population standard deviations are unknown).

1. 👍 0
2. 👎 0
3. 👁 291
1. You need some measure of variability to answer this question.

1. 👍 0
2. 👎 0
posted by PsyDAG
2. A random sample of 10 observations is selected from the first normal population and 8 from the second normal population. For the hypothesis, H0: ¦Ì1 ¡Ü ¦Ì2, (.01 significance level), what is (are) the critical value(s)? (Population standard deviations are unknown

1. 👍 0
2. 👎 0

## Similar Questions

1. ### statistics

A sample of 40 observations is selected from one approximately 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 is 99

asked by K on May 22, 2010
2. ### statistics

A sample of 40 observations is selected from one approximately 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 is 99

asked by georgia on May 29, 2010
3. ### STATS

Suppose we are testing the null hypothesis H0: ì = 20 and the alternative Ha: ì 20, for a normal population with ó = 5. A random sample of 25 observations are drawn from the population, and we find the sample mean of these

asked by Tracy on April 5, 2014
4. ### math

sample of 40 observations is selected from one population with a population standard deviation of 4.6. The sample mean is 101.0. A sample of 47 observations is selected from a second population with a population standard deviation

asked by Phyllis on February 2, 2015
5. ### stats

A sample of 12 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 19. (Round your answers to 3 decimal places.) (a) The standard error of the mean is

asked by liam on March 28, 2011
6. ### statistics

7. A sample of 40 observations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second population. The sample mean is 99 and the sample

asked by Barbara on February 28, 2010
7. ### Statistics

8. A sample of 65 observations is selected from one population. The sample mean is 2.67 and the sample standard deviation is .75. A sample of 50 observations is selected from a second population. The sample mean is 2.59 and the

asked by Barbara on February 28, 2010
8. ### statistics

A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s² = 19.5. Determine the 98% confidence interval for ó².

asked by Laura on August 12, 2009
9. ### statistics

If random samples, each with n = 36 scores, are selected from a normal population with m = 80 and s = 18, how much difference, on average, should there be between a sample mean and the population mean?

asked by Anonymous on October 19, 2010
10. ### statistics

In performing a hypothesis test, the null hypothesis is population mean = 6.9 and the alternative hypothesis is population mean ≠ 6.9, a random sample of 16 items is selected. The sample mean is 7.1 and the sample standard

asked by Anonymous on August 17, 2014

More Similar Questions