A Variable Contains Five Categories $\alpha$ = 01, the Appropriate Decision Is _______

question 42

Multiple Choice

A variable contains five categories.It is expected that data are uniformly distributed across these five categories.To test this, a sample of observed data is gathered on this variable resulting in frequencies of 27, 30, 29, 21, and 24.Using $\alpha$ = .01, the appropriate decision is _______.

• A)reject the null hypothesis that the observed distribution is uniform
• B)reject the null hypothesis that the observed distribution is not uniform
• C)do not reject the null hypothesis that the observed distribution is uniform
• D)do not reject the null hypothesis that the observed distribution is not uniform
• E)do nothing

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Definitions:

Crystals

Solid materials whose constituents, such as atoms, molecules, or ions, are arranged in a highly ordered microscopic structure.

Minerals

Naturally occurring inorganic substances with a definite chemical composition and crystalline structure, forming the building blocks of rocks.

Scratch Test

A method used to determine the relative hardness of minerals by scratching them with an object of known hardness or with other minerals.

Effervescence

The potential of a mineral to have a vigorous bubbling reaction when a drop of dilute hydrochloric acid (HCl) is placed on it.