Mathematics, 18.12.2019 04:31 raerea2005

Ateacher finds that final grades in the statistics department are distributed as: a, 25%; b, 25%; c, 40%; d, 5%; f, 5%. at the end of a randomly selected semester, the following grades were recorded. calculate the chi-square test statistic chi squared used to determine if the grade distribution for the department is different than expected. use alpha equals 0.01 .

grade a b c d f
number 42 36 60 8 14

(a) 3.41
(b) 5.25
(c) 6.87
(d) 4.82

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Ateacher finds that final grades in the statistics department are distributed as: a, 25%; b, 25%;...