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.
Define police investigation. police investigation synonyms, police investigation pronunciation, police investigation translation, English dictionary definition of police investigation. Noun 1. police investigation - the investigation of criminal activities police work investigating, investigation - the work of inquiring into something... Police investigation - definition of police investigation by The Free Dictionary