4. (Optional - Extra Credit) Did the percentage of TV sets owned in the US increase since the above report was issued? Does your data indicate a sufficient increase in the percentage of TV sets owned in the US from 75%? Perform a hypothesis test at a =0.05. a) State your null and alternative hypothesis symbolically and in complete sentences. b) What is the significance level? c) What is the P-value for your data? Write all steps entered into your calculator. Round to four decimal places. d) State the statistical decision. Do you reject or fail to reject the null hypothesis. e) State you conclusion in laymen's terms or simple language that anyone can understand