Biology Skills Refer to Exercise 8.47. In additionto tests involving biology concepts
Chapter 8, Problem 50(choose chapter or problem)
Biology Skills Refer to Exercise 8.47. In additionto tests involving biology concepts, students werealso tested on process skills. The results of pretest andposttest scores, published in The American BiologyTeacher, are given below.11Sample StandardMean Size DeviationPretest: All BACC Classes 10.52 395 4.79Pretest: All Traditional 11.97 379 5.39Posttest: All BACC Classes 14.06 376 5.65Posstest: All Traditional 12.96 308 5.93a. Find a 95% confidence interval for the mean scoreon process skills for the posttest for all BACCclasses.b. Find a 95% confidence interval for the mean scoreon process skills for the posttest for all traditionalclasses.c. Find a 95% confidence interval for the difference inmean scores on process skills for the posttestBACC classes and the posttest traditional classes.d. Does the confidence interval in c provide evidencethat there is a real difference in the mean processskills scores between posttest BACC and traditionalclass scores? Explain.
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