You want to test whether or not the following sample of 30 observations follows a normal distribution. The mean of the sample equals 11.83 and the standard deviation equals 4.53. 2 3 5 5 7 8 8 9 9 10 11 11 12 12 12 12 13 13 13 14 15 15 15 16 16 17 17 18 18 19 The hypothesis is to be tested at the 5% level of significance. If the expected frequencies for the classes are equal to 5, what is the critical value of the test statistic?
Select one:
A. 1.645
B. 1.96
C. 7.815
D. 12.592
+4
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