I am having dificulty finding c) please help. The outlier is (-19.37,339) Drilli

Question

I am having dificulty finding c) please help. The outlier is (-19.37,339)

Drilling down beneath a lake in Alaska yields chemical evidence of past changes in climate. Biological silicon, left by the skeletons of single-celled creatures called diatoms, measures the abundance of life in the lake. A rather complex variable based on the ratio of certain isotopes relative to ocean water gives an indirect measure of moisture, mostly from snow. As we drill down, we look farther into the past. Here are data from 2300 to 12,000 years ago Isotope Silicon Isotope Silicon Isotope Silicon (96) (mg/g) | (96) (mg/g) | (96) (mg/g) 19.90 9520.71 15421.63 222 19.84104-20.80 26321.63 233 19.46 11620.86 26721.19 186 -20.20 139 |-21.28 294 |-19.37 339

Explanation / Answer

Isotope Silicon Correlation -19.9 95 With Isotope Silicon -19.84 104 Isotope 1 -19.46 116 Silicon -0.33 1 -20.2 139 Without Isotope Silicon -20.71 154 Isotope 1 -20.8 263 Silicon -0.78 1 -20.86 267 -21.28 294 Regression Statistics -21.63 222 With Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% -21.63 233 Intercept -476.4698134 617.9813 -0.77101 0.458531 -1853.42 900.4783 -1853.42 900.4783 -21.19 186 Isotope -32.93084523 30.01827 -1.09703 0.298343 -99.8157 33.95402 -99.8157 33.95402 -19.37 339 Y= (-476.5)- (32.93)X Without Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% Intercept -1367.80436 411.1234 -3.32699 0.008841 -2297.83 -437.779 -2297.83 -437.779 Isotope -75.24768334 19.86687 -3.7876 0.004299 -120.19 -30.3057 -120.19 -30.3057 Y= (-1367.8)- (75.25)X

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