This assignment allows you the opportunity to determine if data fits the normal distribution model. Open a new word processing document and complete the four
parts of this assignment. Be sure to show all work for each part of the assignment.
The results of the mid-term exam in an Algebra I class were as follows:
77, 45, 72, 56, 98, 60, 70, 89, 50, 80, 95, 70, 34, 77, 65, 70, 70, 82, 86, 86
Part 1: Find the standard deviation of the scores. Please round the final answer to two decimal places. Be sure to show all work.
• Part 2: What percentage of the scores are within one standard deviation of the mean (+1)? Please include the range of values for this deviation and the exact
values from the data set that are included in this range.
Part 3: What percentage of the scores are within two standard deviations of the mean (+2)? Please include the range of values for this deviation and the exact
values from the data set that are included in this range.
• Part 4: Does this data fit the model of a normal distribution? Why or why not?


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