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January 30, 2015

January 30, 2015

Posted by **Jade** on Thursday, March 11, 2010 at 1:16am.

a. Determine the Z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?

b. What percent of the garages take between 29 and 34 hours to erect?

c. What percent of the garages take 28.7 hours or less to erect?

d. Of the garages, 5 percent take how many hours or more to erect?

- statistics -
**PsyDAG**, Thursday, March 11, 2010 at 10:19amZ = (x-mean)/SD

Calculate the Z scores for the values above. Look them up in a table in the back of your stat text labeled something like "areas under the normal distribution." Find the proportions between or beyond the indicated values and convert to percentages.

I hope this helps.

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