is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico:   x 5.50 6.50 7.50 7.75 8.75 y 15 32 55 39 72 Find a for the equation of the least-squares line . Group of answer choices 42.698 75.923 –75.923 –42.068 –42.698

Q: (c) Find x, and y. Then find the equation of the least-squares line ŷ : b to three decimal places.)…

A:

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: The formula of the correlation coefficient is:

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: The objective of this question is to find the equation of the least squares line y = a + bx, where…

Q: is thought that prehistoric Indians did not take their best tools, pottery, and household items when…

A: Linear regression model consist of one dependent variable and one independent variable.

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: We have to find correlation coefficient ( r ). Formula :

Q: x 5.75 6.25 6.75 7.75 8.25 y 31 26 38 74 72 ​ Find the value of the coefficient of…

A: It is an important part of statistics. It is widely used.

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Data given Y:4,28,30,36,77  n=5

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

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Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: e) The sample correlation coefficient between two random variables x and y is given as 0.884.

Q: What percentage of the variation in y can be explained by the corresponding variation in x and the…

A: It is given that X be the elevation for an archaeological site in the southwestern United States Y…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: From the provided information, x y 5.75 31 6.25 26 6.75 38 7.75 74…

Q: best tools, pottery, and household items when they visited higher elevations for their summer camps.…

A: Given Enter the given data into Excel

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A:

Q: Find the equation of the least squares liney=a+bx. Round a and b to three decimal places. O-83.789+…

A: Given that    X Y X \cdot YX⋅Y X^2X2   5.25 39 204.75 27.5625   5.50 54 297 30.25   5.75 31…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: The method of least squares  is a standard approach in regression analysis to approximate the…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Given data obtained for a collection of archeological sites in New Mexico as shown below. The least…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A:

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Given data is : x 5.50 6.50 7.25 8.00 8.75 y 10 41 53 89 89

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Answer:              29.00     Explanation: Let y= 6   15   14    52      58 Here we want to…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

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Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: It is given that r=0.592,r2=0.35.

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Solution:Straight line equation is y=a+bx.The normal equations are∑y=an+b∑x∑xy=a∑x+b∑x^2The values…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

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Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Given data, X Y X*Y X*X Y*Y 6 28 168 36 784 6.5 20 130 42.25 400 6.75 17 114.75 45.5625 289…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

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Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Here first we calculate the slope "b" of the least-squares regression line. The table of…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Use EXCEL to obtain the value of coefficient of determination   EXCEL procedure:   Go to EXCEL Go…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Given Information:  x 5.00 5.25 5.75 6.75 7.00 y 8 15 13 49 71

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: In this case, elevation (x) is the independent variable and percentage of unidentified artifacts…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Given In Excel sheet