The frequency distribution shows the results of 200 test sco

The frequency distribution shows the results of 200 test scores. distributed? Use a = 0.01. Complete parts (a) through (d). Using a chi-square goodness-of-fit test, you can decide: with some degree of certainty, whether a variable is normally distributed. In all chi-square tests for normality, the null and alternative hypotheses are as follows. H0: The test scores have a normal distribution. Ha: The test scores do not have a normal distribution. a. Find the expected frequencies

Solution

Sol)

Observed freq Expected freq

19 40

61 40

83 40

33 40

4 40

Total obsrved freq=200

Now Expected freq =(sum of frq) / 5 =200/5 =40