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.
The verb examine means to study something carefully and in great detail. You can examine a book, a painting, a personâs face and so on. Right now, you are examining the meaning of examine. Examine means to look at something very closely and usually with the purpose of making a judgment. If you go to see a doctor, the doctor will examine you to see if you are healthy. Examine can also mean âquestion.â When the police examine a witness, they are questioning that witness.