Question Completion Status: QUESTION 9 3 points Say A local non-profit organization is selling 1,800 raffle tickets at $1 each to raise money. The grand prize for the raffle is $500, second prize is $250, and there are two third prizes of $100. What is th expected value for a raffle ticket (3 pts.)? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt A P O WORDS POWERED BY T QUESTION 10 21 points Save An In 2014, the proportion of individuals living in Poland who said they were happy was 0.927. In a 2021 random sample of 1,325 Polish adults, 1,206 said they were happy. Has the proportion of individual in Poland who say they are happy gone down since the 2014 survey? Use 0.05 as the level of significance (a) What are your hypotheses (6 points)? (b) If the null hypothesis is true, the sample proportion, phat, has approximately a Normal distribution with what mean (3 points)? (c) If the null hypothesis is true, the sample proportion, p-hat, has approximately a Normal distribution with what standard deviation (3 points)? (d) Give the standard score (z) for the sample data (3 points) (e) Find the P-value for this significance test (3 points). (f) What is the correct decision regarding the null hypotheses for this test of significance (3 points)? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac)