A politician claims that he is supported by a clear majority of voters, In a recent survey, 40 out of 70 randomly selected voters indicated that they would vote for the politician. a. Specify the null and the alternative hypotheses. b. Calculate the sample proportion. Note: Round your answer to 2 decimal places. c. Calculate the value of test statistic Note: Round final answer to 2 decimal places. d. Find the p-value. p-value