Question

19 of 20 (16 complete) Score: 0 of 1 pt 8.3.130 The following data represent the concentration of organic carbon (mg/L) collected from organic sol. Construct a 99 % confidence interval for the mean concentration of dissolved organic carbon collected from organic soil. (Note: x 18.58 mg/L and s 7.2 mgL) Click here to vew page 1 of the table of ontical values for the t distrbution Click here to vew page 2 of the table of critical values for the tdistnbution Construct a 90% confidence interval for the mean concentration of dissolved organie carbon collected from organic soi moLi L to mgL (Use ascending order. Round to two decimal places as needed)

Answer 1

Using ti-83 calculator.

99% confidence interval for population mean is 13.97 mg/L to 23.19 mg/L .

TEXAS INSTRUMENTS TI-83 Plus TInterval (13.974,23.186) X18.58 Sx 7.2 n=20 STAT PLOT F1 TBLSET F2 FORMAT F3 CALC F4 TABLE F5 Y= WINDOW ZOOM TRACE GRAPH QUIT INS MODE 2nd DEL A-LOCK LIST LINK ALPHA X,Т,Ө,п STAT TEST ANGLE B C DISTR DRAW МАТH VARS PRGM CLEAR APPS MATRIX D SIN-1 cOs-1 TAN-1 E G TC H x-1 SIN COS TAN J EE ) 7 x 2 P V 10x 7 LOG X L4 T L5 L6 V S W 4 5 6 LN RCL L1 Y L2 L3 МЕМ STO 1 2 3 + OFF CATALOG ANS ENTRY SOLVE i ON ENTER CO