Who know about statistics

Sheet1

THREE RIVERS BANK Z-TEST
	ATM 1	ATM 2		Descriptive statistics
	100	115
	130	120			ATM 1	ATM 2
	125	131		count	30	30
	88	114		mean	123.93	126.57
	96	88		sample standard deviation	20.50	19.45
	112	96		sample variance	420.20	378.32
	150	132		minimum	88.0	88.0
	147	143		maximum	155.0	152.0
	111	121		range	67.0	64.0
	142	135
	96	95		standard error of the mean	3.74	3.55
	155	130
	137	145		confidence interval 95.% lower	116.60	119.61
	144	152		confidence interval 95.% upper	131.27	133.53
	98	100		margin of error	7.34	6.96
	101	136		z	1.96	1.96
	120	127
	150	152		skewness	-0.09	-0.58
	151	140		kurtosis	-1.33	-0.78
	100	99		coefficient of variation (CV)	16.54%	15.37%
	115	143
	128	132		normal curve GOF
	120	152		p-value	.1328	.3080
	116	113		chi-square(df=3)	5.600	3.600
	122	125		E	5.000	5.000
	139	140		O(-0.97)	8	6
	130	148		O(-0.43)	3	3
	100	92		O(+0.00)	4	3
	145	135		O(+0.43)	4	5
	150	146		O(+0.97)	3	8
				O(inf.)	8	5
	Hypothesis Test: Independent Groups (z-test)
		ATM 1	ATM 2
		123.93	126.57	mean
		20.50	19.45	std. dev.
		30	30	n
			-2.633	difference (ATM 1 - ATM 2)
			5.159	standard error of difference
			0	hypothesized difference
			-0.51	z
			.6098	p-value (two-tailed)	RETAIN. There is no significant difference. P=.60 which is larger than .01.
					The bright yellow indicates Reject at the .01 level.
					Dull yellow indicates Reject at the .05 alpha level / Retain at the .01 alpha level.
					Black & white indicates Retain. There is no difference.

Runs Plot

100 130 125 88 96 112 150 147 111 142 96 155 137 144 98 101 120 150 151 100 115 128 120 116 122 139 130 100 145 150

Transactions

ATM 1

Runs Plot

115 120 131 114 88 96 132 143 121 135 95 130 145 152 100 136 127 152 140 99 143 132 152 113 125 140 148 92 135 146

Transactions

ATM 2