How old is the abalone? - Abalone (sometimes called ear-shell) are a type of gastropod shellfish known for their colorfu

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How Old Is The Abalone Abalone Sometimes Called Ear Shell Are A Type Of Gastropod Shellfish Known For Their Colorfu 1 (33.92 KiB) Viewed 44 times

How Old Is The Abalone Abalone Sometimes Called Ear Shell Are A Type Of Gastropod Shellfish Known For Their Colorfu 2 (31.25 KiB) Viewed 44 times

How old is the abalone? - Abalone (sometimes called ear-shell) are a type of gastropod shellfish known for their colorful inside shell. The age (in years) of an abalone is determined by cutting the shell through the cone, staining it, and counting the number of rings through the microscope in a manner like counting the rings of a tree trunk. Because this is a tedious and time consuming task, researchers sought to determine whether the approximate age of an abalone shellfish could be predicted using an easier to determine measurement. Use the results below of a sample of n 200 randomly selected abalone shellfish to answer the questions that follow Rings by Length Rings by sa by Shell Weight 2 No. of Rings No. of Rings 03 07 14 04 7 Length (mm) Shell Weight (gr) Mean 9.91 Variable No. of Rings Length (mm) Shell Weight (grams) Sample SD 32115 0.1213 0.4912 1 0.8174 Correlation No. of Rings Length 0.579 Shell Weight 0.5779

Variable No. of Rings Length (mm) Shell Weight (m) Mean 9.01 1 0.8174 Sample 50 32115 0.1215 0.4012 Shell Weight Correlation No. of Rings Length 0.579 0.5770 1. Which variable Length or Shell Weight would serve as a better inear predictor of the number of rings of an abalone shesh? OA Shell Weight because it has a larger correlation with Rings than Length does OB Length, because it has a larger correlation with Rings than weight does OG Shell Weight, because it has a smaller correlation with Rings than Length does OD Length because it has a smaller correlation with Rings than weight does 2. Use the summary results to compute the slope and intercept of the regression equation to predict Number of Rings from Length. Remember not to use a rounded value for hy when you are calculating ho Submit your answers out to at least 6 decimal places b- and 3. The oldest shelfish in the sample had a Length of 585 and a Shell Weight of 0.8685. Its observed Number of Rings was 22 Compute the expected Number of Rings of the shell using your linear regression equation from part 2. along with its residual Submit your answers out to at least 4 decimal places Expected number of rings = and Residual 4. Fill in the blanks to correctly interpret the residual from part 3 the number of rings for this shelfish. We know this because the residual The regression equation 777 value is ???