A child development specialist is interested in learning if a new learning program increases students’ memory....

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A child development specialist is interested in learning if anew learning program increases students’ memory. 15 Subjectslearned a list of 50 words. Learning performance was measured usinga recall test. Students were initially tested and then tested againafter using the new program. Below is the number of wordsremembered by each student.

Student#                   Score1                 Score 2

        1                             24                          26          

               2                             17                          24

               3                             32                          31

               4                             14                          17

               5                             16                          17

               6                             22                          25

               7                             26                          25

               8                             19                          24

               9                             19                          22

              10                            22                          23

             11                         21                          26

             12                           25                          28

            13                           16                          19

           14                        24                          23

           15                          18                          22

Did the learning program significantlyimprove the student’s ability to recall words? Report standarderror of means, df, obtained and critical t, and whether you wouldaccept or reject the null hypothesis.

Answer & Explanation Solved by verified expert
3.8 Ratings (584 Votes)
Given that meanx21 standard deviation sd147359 numbern115 ymean234667 standard deviation sd2 38148 numbern215 null Ho u1 u2 alternate H1 u1 u2 level of significance 005 from standard normal table    See Answer
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