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Instruction 8-4
To become an actuary, it is necessary to pass a series of 10 exams, including the most important one, an exam in probability and statistics. An insurance company wants to estimate the mean score on this exam for actuarial students who have enrolled in a special study program. They take a sample of 8 actuarial students in this program and determine that their scores are: 2, 5, 8, 8, 7, 6, 5, and 7. This sample will be used to calculate a 90% confidence interval for the mean score for actuarial students in the special study program.
-Referring to Instruction 8-4,it is possible that the confidence interval obtained will not contain the mean score for all actuarial students in the special class.
Coltan
A mineral comprising columbite and tantalite, used primarily in the production of tantalum capacitors for electronic devices such as mobile phones.
Eastern Congolese Mines
Mining operations in the eastern region of the Democratic Republic of Congo, often noted for their extraction of minerals like coltan and the associated human and environmental issues.
Mobile Phones
Handheld devices that allow for voice and often data communication over cellular networks.
Cultural Anthropology
The study of customary patterns in human behavior, thought, and feelings. It focuses on humans as culture-producing and culture-reproducing creatures. Also known as social or sociocultural anthropology.
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