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The school board is trying to evaluate a new math program introduced to?second-graders in five elementary schools across the county this year. A sample of
The school board is trying to evaluate a new math program introduced to?second-graders in five elementary schools across the county this year. A sample of the student scores on standardized math tests in each elementary school yielded the following?data:
School No. of Test Errors
a 65
b 14
c 36
d 43
e 55
For the test?errors, the c?-chart with control limits that contain?99.73% of the random variation in test scores?is:
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