Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. Suppose a random sample of employees gave the following information.   x 2 8 14 32 73 y 50 45 35 28 16 As x increases, does the value of r imply that y should tend to increase, decrease, or remain the same? Explain.   Since r is negative, as x increases, y remains the same. Since r is zero, as x increases, y decreases.

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

A:

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A: The formula of the correlation coefficient is:

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A:

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: Que The data below represent the number of days absent, x, and the final grade, y, for a sample of…

A: Calculations

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: What is the sampling distribution of x when µ = 0? Normal with mean 0 and standard deviation 60.…

A: The population mean is 0.

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: Q6. The number of employees, wages per employee and the variance of the wages of employees for two…

A: Giventhe data as follows:Factory AFactory BAverage wages per employee per month1.200100Variance of…

Q: The data table to the right represents the volumes of a generic soda brand. Complete parts (a) and…

A: The given data table represents the volumes of a generic soda brand.

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

A:

Q: predicted value of the language test score. = 3.251x + 31.237 Compute the value of ŷ when a student…

A: We have given that y^ is the predicted value of the language test score and x is the amount of time…

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: Since you have asked multiple question, we will solve the first question for you. If you want any…

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: Which of these situations could be analyzed with regression analysis? A. relationship between gender…

A: In multiple linear regression, there will be more than one independent variable. In simple linear…

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: What is the first thing does the researcher need to do with the data if he wants to conclude that…

A: What is the first thing does the researcher need to do with the data if he wants to conclude that…

Q: 1. A researcher is interested in the relationship between IQ and longevity. A sample of n = 200…

A: A sample of N=200 obituaries is selected. The individuals are classified into two IQ groups and…

Q: Potatoes. A high-quality product is one that is consistent and has very little variability in its…

A: Given data:…

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Q: 13. Suppose you have an Excel file with data in Column C, rows 2 through 101, that is skewed right.…

A: Here given , Data is following skewed right distribution.

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:

Q: 9. Let x be the age of a licensed automobile driver. Let y be the percentage of all fatal accidents…

A: Step 1: Step 2: Step 3: Step 4:

Q: A biology professor claims that, on the average, 15% of her students get a grade of A, 30% get a B,…

A: We have to find chi-square test statistics. Formula : χ2 = ∑(Oi-Ei)2Ei Where , Oi is observed…

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: This question utilizes the BookPrices data set found in the resampledata package. This data set…

A: The data to be used in R is BookPricesThe sample data obtained from R is as followsIt is required to…

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A: Regression  line:A regression line indicates a linear relationship between the dependent variables…

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…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.