Three of the top automakers took a random sample of people that currently own one of their vehicles. They asked if that car owner would purchase another vehicle from the same automaker.

4. Three of the top automakers took a random sample of people that currently own one of their vehicles. They asked if that car owner would purchase another vehicle from the same automaker. Observed Purchase Again? Automaker Yes No Undecided General Motors 548 329 75 Toyota 287 64 Ford 456 182 32 Test to determine if the distribution of purchasing again is homogeneous across these three automakers. Use an a = 0.05 level of significance. (a) State the null (Ho) and alternate (HA) hypotheses. (b) Calculate the expected cell counts and fill them in the table below (using your calculator is recommended!) Expected Purchase Again? Automaker Yes No Undecided General Motors Toyota Ford (c) Check the assumptions and conditions (d) Give the test statistic. (e) Give the P-value and the conclusion reached about the null hypothesis based on the P-value. (f) Summarize the final conclusion in the context of the