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.
inquiry (countable and uncountable, plural inquiries) The act of inquiring; a seeking of information by asking questions; interrogation; a question or questioning. Search for truth, information, or knowledge; examination of facts or principles; research; investigation Scientific inquiry.