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# 7.05 - User deniz gul In Course Adv Pl Statistics V9 2992...

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User : deniz gul In Course : Adv Pl Statistics V9 ( 2992) Instructor : Marlena Morrison If you would like to take this exam again, you can reset the exam and take it again Your score on this exam is 2.5 out of 4 . Answer Key for 7.05 Question 1 (Worth 1 points) The following situations all require inference about a mean or means. Identify each as (1) a single sample, (2) matched pairs, or (3) two independent samples. (a) An education researcher wants to learn whether inserting questions before or after introducing a new concept in an elementary school mathematics text is more effective. He prepares two text segments that teach the concept, one with motivating questions before and the other with review questions after. Each text segment is used to teach a different group of children, and their scores on a test over the material are compared. (b) Another researcher approaches the same problem differently. She prepares text segments on two unrelated topics. Each segment comes in two versions, one with questions before and the other with

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7.05 - User deniz gul In Course Adv Pl Statistics V9 2992...

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