1 ) Using a = 0.01 , is there sufficient evidence to conclude that the proportion of Americans is who purchased an electric car is different from O . 2 7 Conduct a full hypothesis test by following the steps below . Enter an answer for each of these steps in your document . Define the population parameter in one sentence it . State the null and alternative hypotheses using correct notation ill . State the significance level for this problem . in . Calculate the test statistic " by hand " Show the work necessary to obtain the value by typing your work and provide the resulting test statistic . Do not round during the calculation . Then , round the test statistic to two decimal places after you complete the calculation