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A researcher claims that the proportion of smokers in a certain city is less than 20%. To test this claim, a random sample of 700

A researcher claims that the proportion of smokers in a certain city is less than 20%. To test this claim, a random sample of 700 people is taken in the city and 150 people indicate they are smokers.

The following is the setup for this hypothesis test:

{H0:p=0.20Ha:p<0.20

Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places.

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