The Berkeley Supermarket Buys Its Supplies of Potatoes from Two

question 18

Multiple Choice

The Berkeley Supermarket buys its supplies of potatoes from two different farms, A and B.In a recent sampling test, it was found that the sample taken from Farm A had a mean weight of 10 ounces per potato, whereas the sample from Farm B had a mean weight of 10.3 ounces.In view of this test, is there a statistically discernible difference at the 95 percent confidence level) between the mean weights of the potatoes of the two farms?

• A)Yes.
• B)No, because the difference of 0.3 ounces is very small compared to the mean approximately 3 percent).
• C)The standard deviations of both samples must be known the sample sizes are irrelevant) before the above question can be answered.
• D)Both the standard deviations and sample sizes must be known before the above question can be answered.
• E)Even if both the standard deviations and sample sizes were known, the above question cannot be answered.

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Definitions:

Lewis Structure

A diagram that represents the valence electrons of atoms within a molecule, showing how these electrons are arranged around atoms and indicating the bonds between them.

Ionic

Relating to, composed of, or using ions, which are atoms or molecules with a net electric charge due to the loss or gain of one or more electrons.

Covalent

A type of chemical bond where atoms share pairs of electrons.

Hydrogen Chloride

A gaseous compound made of hydrogen and chlorine; when dissolved in water, it forms hydrochloric acid.