# statistical inference part vii hypothesis testing – applications – one population tests 1

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• STATISTICAL INFERENCEPART VIIHYPOTHESIS TESTING APPLICATIONS ONE POPULATION TESTS*

• HYPOTHESIS TEST FOR POPULATION MEAN, KNOWN AND X~N(, 2) OR LARGE SAMPLE CASE:Two-sided Test Test Statistic Rejecting Area H0: = 0 HA: 0

Reject H0 if z < z/2 or z > z/2.

1-/2/2

z/2-z/2

Reject H0Reject H0Do not reject H0*

Chart6

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• HYPOTHESIS TEST FOR POPULATION MEAN, One-sided Tests Test Statistic Rejecting Area1. H0: = 0 HA: > 0

Reject H0 if z > z. 2. H0: = 0 HA: < 0

Reject H0 if z < z.

1-zReject H0Do not reject H0

- z1-Reject H0

Do not reject H0

*

Chart6

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87