Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Math & Sciences (https://www.askmehelpdesk.com/forumdisplay.php?f=402)
-   -   Random sampling/Confidence intervals (https://www.askmehelpdesk.com/showthread.php?t=373331)

  • Jul 8, 2009, 12:18 PM
    willkin
    Random sampling/Confidence intervals
    a random sample of 20 pages of an textbook was made and 60% had drawings or figures on the. Find the 95% confidence interval for the actual proportion of pages on which a drawing or figure would be found?
  • Jul 8, 2009, 12:26 PM
    galactus
    Use the formula

    The z score for a 95% CI is 1.96

    p=.6 and q=.4 and n=20

    Add to and subtract from the .60 to find the C.I.

  • All times are GMT -7. The time now is 10:44 AM.