The Test Scores on a 100-Point Test Were Recorded for 20

The test scores on a 100-point test were recorded for 20 students: Can you reasonably assume that these test scores have been selected from a normal population? Use a stem and leaf plot to justify your answer. Calculate the mean and standard deviation of the scores. If these students can be considered a random sample from the population of all students, find a 95% confidence interval for the average test score in the population.
These test scores ______________ been selected from a normal population.
Mean = ______________
Standard Deviation = ______________
What is 95% confidence interval? (CI)
CI = ______________ Enter (n1, n2)

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