A set of data consists of the number of years that applicants for foreign service jobs have studied German and the grades that they receive on a proficiency test. The following regression equation is obtained: $\hat { \mathrm { y } } = 31.6 + 10.9 \mathrm { x }$, where $\mathrm { x }$ represents the number of years of study and $\mathrm { y }$ represents the grade on the test. Identify the predictor and response variables.

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The Answer of A set of data consists of the number of years that applicants for foreign service jobs have studied German and the grades that they receive on a proficiency test. The following regression equation is obtained: $\hat { \mathrm { y } } = 31.6 + 10.9 \mathrm { x }$, where $\mathrm { x }$ represents the number of years of study and $\mathrm { y }$ represents the grade on the test. Identify the predictor and response variables.

A Set of Data Consists of the Number of Years y^=31.6+10.9x\hat { \mathrm { y } } = 31.6 + 10.9 \mathrm { x }y^​=31.6+10.9x

A Set of Data Consists of the Number of Years $\hat { \mathrm { y } } = 31.6 + 10.9 \mathrm { x }$