PrintTech Inc. is introducing a new line of ink-jet printers and would like to promote the number of pages a user can expect from a prin cartridge. A sample of 10 cartridges revealed the following number of pages printed. (Use / Distribution Table & z Distribution Table.) 3,346 2,578 2,469 2,554 2,549 2,927 2,542 2,461 3,938 2,820 Click here for the Excel Data File Required: a. What is the point estimate of the population mean? (Round your answer to 1 decimal place.) Estimated population mean b. What is the point estimate of the population standard deviation? (Round your answer to 3 decimal places.) Estimated standard deviation c. What is the margin of error for a 90% confidence interval estimate? (Round your answer to 3 decimal places.) Margin of error d. Develop a 90% confidence interval for the population mean. (Round "t value" to 3 decimal places and round your answers to 2 decimal places.) Confidence interval for the population mean is between and