18) df=n-1. 5-1=4

Is this formula correct?

19) I don't know how to calculate that A is the answer.

18) The following table represents the number of absences on various days of the week at an elementary school. Monday ' Tuesday 45 l 32 Wednesday 1 7 Thursday ' Friday 25 l 38 Identify the number of degrees of freedom for a goodness-offit test (for a uniform distribution), assuming a 0.05 significance level. A) 2 B) 3 C) 4 D) 5 19) In studying the occurrence of genetic characteristics, the following sample data were obtained. You would like to test the claim that the characteristics occur with the same frequency at the 0.05 significance level. What is value of the test statistic? Characteristic A B C D E F Frequency 28 30 45 48 39 39 A) 22 = 3.233 B) f= 3.253 C) 22 = 5.321 D) x2 = 5.991 18) 19)