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Functions and commands 369
Mode: Specifies which alternative hypothesis to use:
• 1: <
0
• 2: >
0
• 3: ≠
0
Example:
HypT1mean(0.461368, 0.2776, 50, 0.5, 0.05, 1)
returns {1, -.9462…, 0.4614, 0.8277…, 1.6448…,
0.5671…}
HypT2mean The two-sample T-test for means. Returns a list containing (in
order):
• 0 or 1 to reject or fail to reject the null hypothesis
• The test T-value
• The test value
• The upper-tail probability
• The degrees of freedom
• The upper critical T-value associated with the input α-level
• The critical value of associated with the critical T-
value
HypT2mean((x
1
,x
2
,s
1
,s
2
n
1
,n
2
,pooled,mode)
Pooled: Specifies whether or not the samples are pooled
• 0: not pooled
• 1: pooled
Mode: Specifies which alternative hypothesis to use:
• 1:
1
<
2
• 2:
1
>
2
• 3:
1
≠
2
Example:
HypT2mean(0.461368, 0.522851, 0.2776,
0.2943,50, 50, 0.05, 0, 1)
returns {1, -1.0746…,
-0.0614…, 0.8574…, 97.6674…, 1.6606…, 0.0335…}
x
x