3. According to the National Automobile Dealers Association, Toyota accounted for 18.9% of all new cars sold in 2010. Given the recent problems with the accelerator sticking in certain models, a market analyst believes tha market share will have dropped when the data is released for August 2011. To test this claim, a random sam 800 new car purchases in August 2011 is taken. a. What conjecture would the analyst like to find support for in this sample of purchases? b. Identify the variable which is recorded for each observational unit. c. Identify the sample. d. When 800 purchases were sampled, it was found that 138 of these purchases were Toyota vehicles. Calcula sample proportion of Toyota purchases