Please help! And please show work

21 18 3 2 28 25 3 3 18 16 2 4 20 19 1 5 26 25 1 (b) Compute d. (c) Compute the standard deviation S. (d) Conduct a hypothesis test using a = 0.05. Calculate the test statistic. (Round your answer to three decimal places.) Calculate the p-value. (Round your answer to four decimal places.) p-value = What is your conclusion? O Do not reject Ho. There is insufficient evidence to conclude that u- > 0. O Do not Reject Ho. There is sufficient evidence to conclude that #- > 0. O Reject Ho. There is insufficient evidence to conclude that u > 0.A survey asked senior executives at large corporations their opinions about the economic outlook for the future. One question was, "Do you think that there will be an increase in the number of fulltime employees at your company over the next 12 months?" In the current survey, 224 of 400 executives answered Yes, while in a previous year survey, 180 of 400 executives had answered Yes. Provide a 95% condence interval estimate for the difference between the proportions at the two points in time. (Use current year previous year. Round your answer to four decimal places.) :I to :I What is your interpretation of the interval estimate? The 95% condence interval zero. This suggests that the proportion of executives who are predicting an increase in fulltime jobs for the current year is than the proportion of executives who were predicting an increase in full-time jobs for the previous year. Find the following chi-square distribution values from the chi-square distribution table. (Round your answers to three decimal places. ) (a) X 0.05 with of = 7 (b) * 0,025 with of = 15 (c) X 0,975 With of = 10 (d) x o.01 with of = 20 (e) X 0.95 with of = 16