Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield x = 97.73, y = 99.55, r=

image text in transcribedimage text in transcribedimage text in transcribed
Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield x = 97.73, y = 99.55, r= 0.935, P-value = 0.000, and y = - 2.02 + 1.04x, where x represents the IQ score of the twin born first. Find the best predicted value of y given that the twin born first has an IQ of 95? Use a significance level of 0.05. Click the icon to view the critical values of the Pearson correlation coefficient r. The best predicted value of y is (Round to two decimal places as needed.)Assume that you have paired values consisting of heights (in inches) and weights (in lb) from 40 randomly selected men. The linear correlation coefficient ris 0.418. Find the value of the coefficient of determination. What practical information does the coefficient of determination provide? Choose the correct answer below. O A. The coefficient of determination is 0.825. 17.5% of the variation is explained by the linear correlation, and 82.5% is explained by other factors. O B. The coefficient of determination is 0.175. 17.5% of the variation is explained by the linear correlation, and 82.5% is explained by other factors. O C. The coefficient of determination is 0.825. 82.5% of the variation is explained by the linear correlation, and 17.5% is explained by other factors. O D. The coefficient of determination is 0.175. 82.5% of the variation is explained by the linear correlation, and 17.5% is explained by other factors.Using the lengths (in.), chest sizes (in.), and weights (1b) of bears from a data set, a researcher gets the regression equation below. Weight = - 274 +0.426 Length + 12.1 Chest Size Identify the response and predictor variables in this regression equation. Select the correct response. O A. The response variable is weight and the predictor variables are length and chest size. O B. The response variable is chest size and the predictor variables are weight and length. O C. The response variables are length and chest size and the predictor variable is weight. O D. The response variable is length and the predictor variables are weight and chest size

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Introductory Algebra Concepts And Graphs

Authors: Charles P McKeague

1st Edition

1630980110, 9781630980115

More Books

Students also viewed these Mathematics questions

Question

Describe the criteria for an effective budget.

Answered: 1 week ago

Question

Always have the dignity of the other or others as a backdrop.

Answered: 1 week ago