An educator has developed a program to improve math scores on the Texas STAAR test. The average STAAR Mathematics test for third graders in the district was mu = 1472 A sample of n = 30 third graders took the new math training program before taking the STAAR Math test. The average score for the students was M = 1497 with a standard deviation of s = 145 (note, this is standard deviation, not variance). Was there a significant change in test scores? (Use alpha = 0.05 two-tail test)
An educator has developed a program to improve math scores on the Texas STAAR test. The average STAAR Mathematics test for third graders in the district was mu = 1472 A sample of n = 30 third graders took the new math training program before taking the STAAR Math test. The average score for the students was M = 1497 with a standard deviation of s = 145 (note, this is standard deviation, not variance). Was there a significant change in test scores? (Use alpha = 0.05 two-tail test)
determine the degree of freedom
calculate the t crit value
calculate the estimated standard error for the sample
calculate the observed t statistics for the sample
calculate the effect size using cohens d
what conclusion can be made from these data
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