ASWESBE9 8.TB.1.036. 0/1 Submissions Used ASK YOUR TEACHER A random sample of 100 credit sales in a department store showed an average sale of $130.00. From past data, it is known that the standard deviation of the population is $35.00. (Round your answers to two decimal places.) You may need to use the appropriate appendix table or technology to answer this question. (a) Determine the standard error (in dollars) of the mean. $: (b) With a 0.95 probability, determine the margin of error (in dollars). $: ((2) What is the 95% condence interval of the population mean (in dollars)? $:m$E