Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 767 72.69 241 29.87 900 79 437 52.59 913 88.91 440 44.8 479 52.53 347 36.29 574 65.18 A student calculates a linear model yy = xx + . (Please show your answers to two decimal places) Use the model to estimate the cost when number of pages is 432. Cost = $ (Please show your answer to 2 decimal places.)

In baseball, two statistics, the ERA (Earned Run Average) and the WHIP (Walks and Hits per Inning Pitched), are used to measure the quality of pitchers. For both measures, smaller values indicate higher quality. The following computer output gives the results from predicting ERA by using WHIP in a least-squares regression for the 2017 baseball season. Variable DF Estimate SE T Intercept 1 -5.0 0.26 - 19.3 WHIP 1 6.8 0.14 47.4 Which of the following statements is the best interpretation of the value 6.8 shown in the output? ERA is predicted to increase by 6.8 units for each 1 unit increase of WHIP. WHIP is predicted to increase by 6.8 units for each 1 unit increase of ERA. For a pitcher with 0 units of WHIP, the ERA is predicted to be approximately 6.8 units. For a pitcher with 0 units of ERA, the WHIP is predicted to be approximately 6.8 units. Approximately 6.8% of the variability in ERA is due to its linear relationship with WHIP.

Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 641 80.51 534 55.74 814 92.54 981 119.91 965 116.15 929 102.19 395 42.45 222 26.42 992 118.12 A student calculates a linear modelyy =  +  xx. (Please show your answers to 2 decimal places)Use the model to estimate the cost when number of pages is 324.Cost = $ (Please show your answer to 2 decimal places.)

Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (2) Cost(y) 590 71 684 72.4 922 95.2 462 56.2 225 35.5 281 34.1 630 66 976 90.6 932 102.2 A student calculates a linear model y = 0.0582 x+30.7051 x. (Please show your answers to at least 4 decimal places) Use the model to estimate the cost when number of pages is 946. Cost $85.67 x (Please show your answer to 2 decimal places.)

Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 272 52.08 617 103.38 628 94.92 702 107.28 624 107.36 572 93.08 571 104.94 361 67.54 523 81.22 A student calculates a linear modelyy =  xx + . (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 689.Cost = $ (Please show your answer to 2 decimal places.)

Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 420 64.8 291 49.19 970 114.3 280 43.2 583 66.47 700 74 397 44.73 254 36.86 702 81.18 912 93.08 A student calculates a linear modelyy =  xx + . (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 285.Cost = $ (Please show your answer to 2 decimal places.)

Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 726 35.3 737 45.85 355 24.75 255 14.75 754 34.7 797 49.85 898 59.9 424 18.2 391 31.55 A student calculates a linear modelyy = Incorrect xx + . (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 777.Cost = $ (Please show your answer to 2 decimal places.)

Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 850 55.5 879 47.95 996 48.8 700 41 850 43.5 623 37.15 533 26.65 935 51.75 563 21.15 A student calculates a linear modelyy =  xx + . (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 460. Cost = $ (Please show your answer to 2 decimal places.)

Seedlings of understory trees in mature tropical rainforests must survive and grow using intermittent flecks of sunlight. How does the length of exposure to these flecks of sunlight (fleck duration) affect growth? Researchers experimentally irradiated seedlings of the Southeast Asian rainforest tree with flecks of light of varying duration while maintaining the same total irradiance to all the seedlings. Below is the data. Fit a linear model to the data. Tree Mean Fleck (min) Relative growth rate (mm/mm/week 1 3.4 0.013 2 3.2 0.008 3 3 0.007 4 2.7 0.005 5 2.8 0.003 6 3.2 0.003 7 2.2 0.005 8 2.2 0.003 9 2.4 0 10 4.4 0.009 11 5.1 0.01 12 6.3 0.009 13 7.3 0.009 14 6 0.016 15 5.9 0.025 16 7.1 0.021 17 8.8 0.024 18 7.4 0.019 19 7.5 0.016 20 7.5 0.014 21 7.9 0.014   a)What is the rate of change in relative growth…