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The mean life of a set of AAA batteries used in a handheld GPS (Global Positioning System) unit is 8 hours with a standard deviation of 0.5 hours. Assuming that the battery lives are normally distributed, if a class uses 16 of these units on a field trip, approximately how many will still be working after 8.25 hours?
Acidic Substance
A substance with a pH less than 7, which donates hydrogen ions when dissolved in water.
Basic Substance
A fundamental material or compound that is essential for a particular biological function or structure; often refers to simple, key molecules in biochemistry.
Amino Acids
Organic compounds that serve as the building blocks for proteins, essential to numerous processes in living organisms.
Triglycerides
A type of fat (lipid) found in your blood, made up of a glycerol molecule attached to three fatty acids, used by the body for energy or stored as fat.
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