A biology professor claims that, on the average, 15% of her students get a grade of A, 30% get a B, and 30% get a C, 10% get a D, and 15% get an F. The grades of a random sample of 117 students were recorded. The following table presents the results. Grade 1- 12 Grade 2- 51 Grade 3- 23 Grade 4- 28 Grade 5- 3 What is the value of x2 (x squared) 11.143 9.488 49.038 47.900

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