In order to determine an interval for the mean of a population with unknown standard deviation a sample of 61 items is selected. The mean of the sample is determined to be 23. The number of degrees of freedom for reading the t value is a. 22 b. 23 c. 60 d. 61.
Learner's definition of INVESTIGATE 1 : to try to find out the facts about (something, such as a crime or an accident) in order to learn how it happened, who did it, etc.
n. pl. inÂ·quirÂ·ies. 1. The act of inquiring: engaged in scientific inquiry. 2. A question; a query: There were many inquiries about the new tax rates. 3. A close examination of a matter: a Congressional inquiry into the scandal.