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Home Q & A Board Science-Related Homework Help Mathematics
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aggotfay aggotfay
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6 years ago
In testing the difference between two population means using two independent samples, the population standard deviations are assumed to be unknown, each sample size is 30, and the calculated test statistic z = 2.56 . If the test is two-tail and 5 level of significance has been specified, the conclusion should be to:
 a. reject the null hypothesis.
  b. not to reject the null hypothesis.
  c. choose two other independent samples.
  d. none of these answers is correct.
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FredioFredio
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aggotfay Author
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6 years ago
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ouasfoudgewu
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Yesterday
You make an excellent tutor!
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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