Determine Whether the Graph of the Quadratic Function Opens Up $f ( x ) = - 8 x ^ { 2 } + 9 x + 1$

question 41

Multiple Choice

Determine whether the graph of the quadratic function opens up or down.
- $f ( x ) = - 8 x ^ { 2 } + 9 x + 1$

• A)down
• B)up

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Definitions:

Finite Population Correction Factor

A factor applied to the calculation of sampling error when sampling without replacement from a finite population.

Infinite Population

A theoretical concept in statistics where the population size is considered boundlessly large.

Standard Deviation

An indicator that measures the level of disparity or distribution of values in a dataset from its mean.

Sampling Distribution

The probability distribution of a given random sample-based statistic.