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SIZIF [17.4K]
3 years ago
5

A chemistry teacher wants to improve exam scores by incorporating more interactive in-class activities. The mean exam score for

all her previous classes is 68% with standard deviation 10%. After trying out the interactive in-class activities for her current class, this class got a score of 75%. There were 25 students in the class. She decides to calculate a 95% confidence interval for what the average exam score would be if she continued this method for all classes.
Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

Step-b

Mini conclusion: if we randomly select a sample of 25 students, there is a 95% probability that the mean score is between 64.08 and 71.92.y-step explanation:

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