Question

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 At the 5% level of significance, the conclusion of the test is that the

Answer 1

At 5% level of significance the conclusion of the test is that the number of intervals used to test the hypothesis is : 5

Explanation:

At 5% level of significance the conclusion of the test is that the number of intervals used to test the hypothesis is : 5

since each interval contains equal number of values lets divide the data into 6 groups i.e. frequency in the third group = 30 /6 = 5

hence we can say that the number of intervals used to test the hypothesis is 5