To determine if there is a difference between the investing preferences of mid-level managers working in the public and private sectors in a certain city. A random sample of 320 public-sector employees and 380 private-sector employees was taken. The sampled participants were then asked about their retirement investment decisions and classified as being either "aggressive," if they invest only in stocks or stock mutual funds, or "balanced," if they invested in some combination of stocks, bonds, cash, and other. The results are available below. Complete parts a and b below. Click the icon to view the results of the study. . . . . . HA: At least one mean for an employment sector is not equal to the oth X O C. Ho: Employment sector is independent of investing preference. Study results HA: Employment sector is not independent of investing preference. O D. Ho: Employment sector is normally distributed. Full data set HA: Employment sector is not normally distributed. Aggressive Balanced Public 162 158 The test statistic is. Private 238 142 (Round to two decimal places as needed.) The p-value is. (Round to three decimal places as needed.) Print Done b. State the conclusion of the test conducted in part a. Choose the correct answer below. O A. Reject Ho. There is sufficient evidence to conclude that at least one mean is not equal to the others and there is a relationship between the two variables. O B. Do not reject Ho. There is insufficient evidence to conclude that the variable is not normally distributed and there is no relationship between the two variables. O C. Do not reject Ho. There is insufficient evidence to conclude that the two means are not equal and there is no relationship between the two variables. O D. Reject Ho. There is sufficient evidence to conclude that the two variables are not independent and there is a relationship between the two variables