Question 923329
mean = 3797, sd = 353.051775
sample of 10 cartridges (small ample size)
95 percent confidence interval for the population mean
critical t-value =  2.26
ME = 2.26(353/sqrt(10)) = 252.28
CI:  3797 - ME < u < 3797 + ME
CI:  3797 - 252.28 < u < 3797 + 252.28
CI: (3545, 4049)
........Small sample critical values:
 <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
DF	Probability, p 2-tailed			
	0.1	0.05	0.01	0.001
1	6.31	12.71	63.66	636.62
2	2.92	4.3	9.93	31.6
3	2.35	3.18	5.84	12.92
4	2.13	2.78	4.6	8.61
5	2.02	2.57	4.03	6.87
6	1.94	2.45	3.71	5.96
7	1.89	2.37	3.5	5.41
8	1.86	2.31	3.36	5.04
9	1.83	{{{ highlight_green(2.26)}}} 	3.25	4.78
10	1.81	2.23	3.17	4.59