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10 Cards in this Set
- Front
- Back
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Lower tail test
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Ho: M ≥ Mo
Ha: M < Mo reject if z ≤ -za |
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∂
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∂/srt(n)
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test statistic
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(xbar - M)/ (∂/sqrt(n))
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upper tail test
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Ho: M ≤ Mo
Ha: M > Mo reject if z ≥ za |
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type I error
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if Ho is true and we reject it
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type II error
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if Ha is true and we accept
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two tailed test
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Ho: M = Mo
Ha: M ≠ Mo reject if z ≤ -z(a/2) or z ≥ z(a/2) |
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degrees of freedom
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n-1
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90%
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1.645
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95%
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1.96
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