STATISTICAL TECHNIQUES IN BUS.+ECON.
STATISTICAL TECHNIQUES IN BUS.+ECON.
18th Edition
ISBN: 9781260239478
Author: Lind
Publisher: RENT MCG
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Confidence Intervals
When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calcul…
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Chapter 7, Problem 13E

A normal population has a mean of 20.0 and a standard deviation of 4.0.

  1. a. Compute the z value associated with 25.0.
  2. b. What proportion of the population is between 20.0 and 25.0?
  3. c. What proportion of the population is less than 18.0?
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STATISTICAL TECHNIQUES IN BUS.+ECON.

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