A Potato Chip Manufacturer Has Found That in the Past

question 16

Multiple Choice

A potato chip manufacturer has found that in the past the standard deviation of bag weight has been 0.2 ounces.They want to test whether the standard deviation has changed.The null hypothesis is:

• A) : = 0.2.
• B) : σ = 0.2.
• C) : σ = 0.04.
• D) : = 0.04.

---

Definitions:

Hydrogen Bond

A weak bond formed between a hydrogen atom in one molecule and an electronegative atom, such as oxygen or nitrogen, in another molecule, important in the structure of water and biological molecules.

Polar Covalent Bond

A type of chemical bond where a pair of electrons is unequally shared between two atoms.

Water Molecule

A chemical compound consisting of two hydrogen atoms bonded to one oxygen atom, essential for all known forms of life.

Hydrogen Atom

The simplest type of atom, consisting of one proton in the nucleus and one electron orbiting the nucleus, fundamental to the chemistry of life.