A test is conducted to find out if more than 70% of U.S. adults are interested in economic issues. A simple random sample of 27 U.S. adults were taken and 21 said they are interested in economic issues. Test the hypothesis at 5% significance level. a) The null hypothesis is Ho : p [ Select ] v VS. Ha : P [ Select ] b) The observed value p = [ Select ] v c) The p-value = [ Select ] d) From part (c) since the p-value is [ Select ] the significance level a we conclude that [ Select ]