Activity 12 lone to all o 1. A company wants to determine if its employees have any preference among 5 different health plans which it offers to them. A sample of 200 employees provided the data below. Conduct appropriate hypothesis testing to test the claim that the employees show no preference when it comes to choosing a health plan. Use a - 0.01. Plan ABC DE Employees preferences 30 18 65 55 32 Expected preferences Ho HA : test statistic: critical value: Conclusion: 2. A researcher wanted to determine whether pedestrian deaths were uniformly distributed over the days of the week. She randomly selected 300 pedestrian deaths, recorded the day of the week on which the death occurred, and obtained the following results (data is from Insurance Institute of Highway Safety). Mon Tues Wed Thurs Fri |Sat|Sun Observed 39 Expected numbers Are pedestrian fatalities equally likely on each day of the week? Conduct an appropriate hypothesis testing using a - -05 level of significance. Ho : HA test statistic: critical value: Conclusion: OLOZ WW Xtivity%2012%20Accessible.pdf 3. In a poll of 13660 voters during the 2004 presidential election campaign, the following data were collected: Bush Kerry |Other Total Male 3455 2764 65 6284 Female 3541 3762 73 7376 Total 6996 6526 8 13660 Is there evidence at the a - 0.05 level to say that gender influenced voting choice? Conduct an appropriate hypothesis testing using a - .05 level of significance. Expected Values (round to 2 decimal places) Bush Kerry Other Male Female Ho : HA test statistic: critical value: Conclusion: OLD-CD 99+ W X