STAT homework : mathematics expert

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2)  Suppose an educator is interested in the difference in math achievement of third=grade students who are taught under two conditions.  The first condition is a highly structured environment in which a fixed time is given for the teaching and learning of math concepts.  The second condition is a less structured environment in which the same concepts are presented but with n o set time for completion of the teaching-learning process.  We will call the group assigned to the highly structured environment group 1 and the group assigned to the less structured environment group 2.  At the end of the six weeks, a random sample of each group of students takes an achievement test.  The level of significance is .05.  The educator tells us to conduct a negative directional test.

 

a.  Find the cv.

 

b.  Find the test statistic.

 

c.  Intepret the results.

 

Group 1

Group 2

 

 

 

 

35

52

 

51

87

 

66

76

 

42

62

 

37

81

 

46

71

 

60

55

 

55

67

 

53

 

 

N1=

N2=

 

Mean1

Mean2

Sum of Scores Squared

For Group 1 =

For Group 2 =

 

Variance1=

Variance2 =

 

S1

S2

 

 

 

 

I have helped you by identifying some key data points you must find above before you finish the research for the educator.

    • 12 years ago
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