Concept explainers
To find the two probabilities given in example 9.8
Explanation of Solution
Given:
n = 50
Population proportion = p = 0.5
Formula:
Calculation:
Use Sample proportion =
First need to calculate z-score,
Therefore,
Using excel formula, =NORMSDIST(0.85)
Hence,
Probability 2:
Use Sample proportion =
First need to calculate z-score,
Therefore,
Using excel formula, =NORMSDIST(3.11)
Hence,
Chapter 9 Solutions
Statistics Through Applications
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