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Lower critical value and a positive upper critical value

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Reference no: EM132158939

Question: Sample 1 from Population 1

  • Mean 1000
  • sample standard deviation 400
  • sample size 50

Sample 2 from Population 2

  • Mean 1250
  • Sample standard deviation 500
  • Sample size 75

Test the HO: population 1 mean = population 2 mean at α  = 0.01. HA: population 1 mean ≠ population 2 mean. This is a two-tailed test with both a negative lower critical value and a positive upper critical value. Separate variances is assumed.

Select an option

A. Pvalue 0.0025. HO rejected. Conclude difference of means ≠ 0.

B. Pvalue 0.0012. HO rejected. Conclude difference of means ≠ 0.

C. Pvalue 0.9988. HO not rejected. Conclude difference of means = 0 is plausible

Reference no: EM132158939

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