day one 6, day two 4, day three 5, day four 7, day five 8, day six 3, day seven 4, day eight 5, day nine 3, day ten 11.
(a) Calculate the overall proportion of "tourists" (cars with out-of-state plates) and the standard deviation of proportions.
(b) Using limits, calculate the LCL and UCL for these data.