Multiple choice The regression of price on talk timetalk tim

Multiple choice.

The regression of price on talk timetalk time of cell phonecell phones had Upper R squared equals 44.3 %R2=44.3%. Answer the questions below.

The regression of price on talk time of cell phones had R2-44.3%. Answer the questions below a) What is the correlation between talk time and price? r= | | (Round to three decimal places as needed.) b) What would you predict about the price of a cell phone one standard deviation above average in talk time? a)What is the correlation between talk time and price? OA. The price of a cell phone that is one standard deviation above the mean talk time would be predicted to cost r times the mean price. O B. The price of a cell phone that is one standard deviation above the mean talk time would be predicted to be r standard deviations below the mean price. ° C. The price of a cell phone that is one standard deviation above the mean talk time would be predicted to be r standard deviations above the mean price. 0 D. There is not enough information to make a prediction c) What would you predict about the price of a cell phone four standard deviations below average in talk time? 0 A. The price of a cell phone that is four standard deviations below the mean talk time would be predicted to be 4-r standard deviations below the mean price. O B. The price of a cell phone that is four standard deviations below the mean talk time would be predicted to cost 4-r times the mean price. ° C. The price of a cell phone that is four standard deviations below the mean talk time would be predicted to be r standard deviations below the mean price. D. There is not enough information to make a prediction.

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