Select the correct answer below: The probability of observing a value of 20 = -2.83 or more if the null hypothesis is true is 99.77%. The probability of observing a value of 20 = -2.83 or less if the null hypothesis is true is 99.77%. The probability of observing a value of 20 = -2.83 or less if the null hypothesis is true is 0.23%. The probability of observing a value of 20 = 2.83 or more if the null hypothesis is true is 0.23%.

A researcher, studying air quality in a metropolitan city, is interested in testing the claim that less than 20% of people smoke cigarettes. To test this claim, the researcher collects and records data on a sample of 700 adults and 110 of them smoke cigarettes. The following is the data from this study: . Sample size = 700 adults . The alternative hypothesis is Ha : p