c(mg/L)	signál (mV)				průměr nebo všechny body?		
150.0	22.0	21.0	19.5				
200.0	30.5	31.0	28.0				
250.0	35.0	35.5	30.0				
300.0	40.0	41.0	37.5				
350.0	51.0	49.0	48.0				
400.0	55.0	53.0	54.0				
450.0	64.0	66.5	66.0				
500.0	70.5	71.0	69.0				
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
##### Sheet/List 2 #####
testování úseku							
c	mAU						
0.12	133.5						
0.23	254.6						
0.36	404.4						
0.51	560.7						
0.62	689.1						
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
##### Sheet/List 3 #####
"Concentration
 of the standards"	"Instrument
 readings"				výpočet intervalu spolehlivosti					
1.01	95	93	99							
2.02	201	190	198							
3.03	305	295	297							
4.04	399	400	404							
5.05	495	510	503							
6.06	610	605	600							
7.07	700	695	698							
8.08	810	803	808							
	650	666	654		 =vzorek					
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
										
##### Sheet/List 4 #####
"In the potentiometric determination of Pb2+ in solution, the following calibration data was collected."		
		
	"Pb2+, ppm"	"Emeas, mV"
	15	-338.5
	35	-329.8
	89	-316.5
	150	-312.2
	230	-303.7
	400	-296.4
	500	-295.5
	650	-292.5
		
		
		
"Another solution, whose concentration of Pb2+ was not known, yielded a measured potential of -300.8 mV"		
Report the concentration of lead in the solution in the form of a confidence interval.