question archive For the past several years, the mean literacy-achievement score for a population of third-grade students has been 45 with a population standard deviation of 15
For the past several years, the mean literacy-achievement score for a population of third-grade students has been 45 with a population standard deviation of 15
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For the past several years, the mean literacy-achievement score for a population of third-grade students has been 45 with a population standard deviation of 15. A researcher is interested in whether an experimental teaching program is more or less effective than current teaching methods for literacy. After participating in the experimental teaching program, a random sample of 100 students had a mean score of 48.75.
(8 marks) Formulate and test the appropriate hypotheses using the -value p approach. Would you reject the null hypothesis 0.05 at = ? What would be your conclusion, explained within the context of the test?
(2 marks) Would you reject the null hypothesis 0.01 at = ? What would be your conclusion, explained within the context of the test?
(1 mark) How strong is the evidence against 0 H ? (Hint: Refer to Unit 4, Section 7, in the Study Guide)
