To conduct a survey that addressed the demographics of social networking users, a company surveyed respondents by telephone, drawing a random sample of landlines No Answer/Busy and another random sample of cell phones. For those numbers that were valid, the Voicemail report is shown in a table to the right. Complete parts a through d below. Land Cell Total 560 44 604 3,327 2,819 6,146 Contact Total 8,360 8.605 16,965 12,247 11,468 23,715 a) Under the usual null hypothesis, what are the expected values? Complete the table below. No Answer/Busy Voicemail Contact Land Cell 311.92 292.08 3173.94 2972.06 8761.14 8203.86 (Round to two decimal places as needed.) b) Compute the 2 statistic. x2 = 461.26 (Round to two decimal places as needed.) c) How many degrees of freedom does the x2 statistic have? df= 2 (Type an integer or a decimal.) d) What do you conclude? Find the critical value for a=0.05. (Round to three decimal places as needed.)