Posted by **pokwang** on Sunday, September 18, 2011 at 12:07am.

It is known from the records of the City Schools that the standard deviation

of Algebra scores is 6.0. A sample of 200 students from the system was

taken and was found out that the sample mean score is 75. Previous tests

showed the population mean to be 70. Is it safe to conclude that the

sample is significantly different from the population? Use α= 0.05.

## Answer this Question

## Related Questions

- Statistics - Suppose you administered an anxiety test to a large sample of ...
- statistics - Suppose you administered an anxiety test to a large sample of ...
- statistics - d. There are 200 students in a sample. How many of these students ...
- statistics - what are the mean and standard deviation of a sampling distribution...
- math - Statistics: Analyze student exam scores Students were given an exam with ...
- Statistics - 3. A professor is interested in whether there is a difference in ...
- statistics - The Survey of Study Habits and Attitudes (SSHA) is a psychological ...
- statistics - In an extensive study involving thousands of British children, ...
- statistics - Suppose that the mean score of an exam was 77 when taken 30 ...
- statistics - Suppose that the mean score of an exam was 77 when taken 30 ...