ch09

# ch09 - Ch.9...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
4) A random sample of 150 students has a grade point average with a mean of 2.86 and with a population standard deviation of 0.78. Construct the confidence interval for the population mean, μ , if c = 0.98. A) (2.71, 3.01) B) (2.51, 3.53) C) (2.43, 3.79) D) (2.31, 3.88) 5) A random sample of 40 students has a mean annual earnings of \$3120 and a population standard deviation of \$677. Construct the confidence interval for the population mean, μ if c = 0.95.
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 06/06/2010 for the course EC 11 taught by Professor All during the Spring '10 term at UCLA.

### Page1 / 17

ch09 - Ch.9...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online