View Policies Current Attempt in Progress A particular automobile costs an average of $21,755 in British Columbia. The standard deviation of prices is $650. Suppose a random sample of 30 dealerships in Vancouver and Victoria is taken, and their managers are asked what they charge for this automobile. What is the probability of getting a sample average cost of less than $21,500? Assume that only 120 dealerships in all of British Columbia sell this automobile. Appendix A Statistical Tables (Round the values of z to 2 decimal places, e.g. 0.75. Round the intermediate values to 4 decimal places, e.g. 0.7589. Round your answer to 4 decimal places, e.g. 0.7589.) P = eTextbook and Media Save for Later Attempts: 0 of 1 used Submit