5) An educational study was designed to investigate the effectiveness of a reading program of elementary age children. Each child was given a pretest and posttest. Highest posttest scores would indicate reading improvement. From a very large population, a random sample of scores for the pretest and posttest are as follows: Child Pretest Score Posttest Score 1 40 48 2 36 42 3 32 4 38 36 5 43 6 33 37 7 36 45 Child 3 moved from the school district and did not take the posttest. Child 5 moved into the district after the start of the study and did not take the pretest. Find a 90% confidence interval estimate of the mean improvement in the reading scores.
5) An educational study was designed to investigate the effectiveness of a reading program of elementary age children. Each child was given a pretest and posttest. Highest posttest scores would indicate reading improvement. From a very large population, a random sample of scores for the pretest and posttest are as follows: Child Pretest Score Posttest Score 1 40 48 2 36 42 3 32 4 38 36 5 43 6 33 37 7 36 45 Child 3 moved from the school district and did not take the posttest. Child 5 moved into the district after the start of the study and did not take the pretest. Find a 90% confidence interval estimate of the mean improvement in the reading scores.
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 6E: List the sample space of each experiment. Tossing three coins
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Transcribed Image Text:5) An educational study was designed to investigate the effectiveness of a reading program of
elementary age children. Each child was given a pretest and posttest. Highest posttest scores
would indicate reading improvement. From a very large population, a random sample of score
for the pretest and posttest are as follows:
pres
Child Pretest Score Posttest Score
1
40
48
2
36
42
3
32
36
43
4
38
6
33
37
7
36
45
Child 3 moved from the school district and did not take the posttest. Child 5 moved into the
district after the start of the study and did not take the pretest. Find a 90% confidence interval
estimate of the mean improvement in the reading scores.
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