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x 10.3.27 Question Help Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certa area was 0.11 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below. Click the icon to view the data table. (a) State the hypotheses for determining if the mean concentration of calcium precipitation has changed since 1990. = 0.11 mg/L Hy: H * 0.11 mg/L (b) Construct a 98% confidence interval about the sample mean concentration of calcium precipitation. The lower bound is nts The upper bound is i Data Table - X (Round to four decimal places as needed.) tions Enter your answer in the edit fields and then click Che 0.073 0.088 0.066 0.265 0.116 0.173 0.125 0.249 0.338 0.098 ivity part remainina javascript:doExercise(8); Question 9 (1/1) Question 10 (1/1) ype here to search O 994 e ENG 7/12 DELL F2 F3 F4 F5 F6 F7 F9 F10, F12. Ortser Insert @ & 7 2 W 4 5 6 V 8 Q W E R T Y O P A S D F G H K Z X B N M Alt Alt Ctri + Hor