THE NUMBER OF DEGREES OF FREEDOM FOR CALCUI -ATING THE CRITICAL VALUE OF T HE PEARSON CRITERION , IF THE NUMBER OF INTERVALS 8. THE NUMBER OF UNKNOWN DISTRIBUTION PARAMETE RS 2. THE SAMPLE VOLUME 60 IS EQUAL TO Select one: 6 52 5 D 7 58

The correct answer is 5.<br /><br />The number of degrees of freedom for calculating the critical value of the Pearson criterion is calculated as the number of intervals minus 1. In this case, the number of intervals is 8, so the number of degrees of freedom is 8 - 1 = 7. However, the question also states that the number of unknown distribution parameters is 2, which means that we need to subtract 2 from the number of degrees of freedom. Therefore, the final number of degrees of freedom is 7 - 2 = 5.