A small town is concerned about public reaction to its new high voltage electric

Question

A small town is concerned about public reaction to its new high voltage electric tower project that is currently in progress. In order to measure resident’s perception, a weekly survey is conducted. Each time, a sample of 100 residents is surveyed. The results to date are shown below. The P-chart can be used. Draw the graph and plot data. Is everything under control? Analyze data using 5% risk of Type I error (z=1.96).

Week                            1          2          3          4          5          6          7          8

Number Opposed          10         8          12         6          4          14         8          10

Explanation / Answer

Answer: Week number opposed 1 10 2 8 3 12 4 6 5 4 6 14 7 8 8 10 Mean = 9 Standard deviation 3.207135 Z score = 1.96 Probability = 0.975002105 Upper limit= 12.2071349 lower limt= 5.792865097

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