A survey of voter sentiment was conducted in four mid-city political wards to compare the fraction...

A survey of voter sentiment was conducted in four mid-city political wards to compare the fraction of voters favoring candidate A. Random samples of 200 voters were polled in each of the four wards with results as shown.

	Ward 1	Ward 2	Ward 3	Ward 4	Totals
Favor A	76	53	59	48	236
Not Favoring A	124	147	141	152	564
Totals	200	200	200	200	800

Does the data present sufficient evidence to indicate that the fractions of voters favoring candidate A differ in the four wards? (Test the hypothesis of independence of the two classifications using α = 0.05).

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orchestra answered 1 year ago

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