The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. 1429 1230 987 694 722 834 Assume the population is normally...

Extracted text: The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. 1429 1230 987 694 722 834 Assume the population is normally distributed. 726 743 543 620 1442 949 (a) Find the sample mean. (Round to one decimal place as needed.) (b) Find the sample standard deviation. (Round to one decimal place as needed.) (c) Construct a 95% confidence interval for the population mean u. A 95% confidence interval for the population mean is (Round to one decimal place as needed.) Next Help me solve this View an example Get more help - 829 PM 53°F Clear A 10/31/2021 21 99+ O Type here to search Insert Delete PriSc F11 F12 F8 F9 F10 F7 F6 F5 F4 Num Lock Esc F1 F2 F3 Backspace %23 4. 5 -7 U Home E T Tab Enter G H. K D CapsLk Shift Ec M X. C V Shift PgUp Alt Ctrl End PgDn Home Alt 4- + I/ P 本