A regression was run to determine if there is a relationship between hours of TV watched per day (x) andnumber of situps a person can do (y).The results of the regression were:y=a+bxb=-0.734a=32.069r²=0.765625r=-0.875Use this to predict the number of situps a person who watches 11.5 hours of TV can do.Round to one decimal place.

Given y=a+bx b=-0.734 a=32.069 r²=0.765625 r=-0.875

Answered: A regression was run to determine if…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter4: Linear Functions

Section: Chapter Questions

Problem 41RE: For the following exercises, consider the data in Table 5, which shows the percent of unemployed in...

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For the following exercises, consider the data in Table 5, which shows the percent of unemployed in a city ofpeople25 years or older who are college graduates is given below, by year. 41. Based on the set of data given in Table 7, calculatethe regression line using a calculator or othertechnology tool, and determine the correlationcoefficient to three decimal places.
For the following exercises, consider the data in Table 5, which shows the percent of unemployed ina city of people 25 years or older who are college graduates is given below, by year. 40. Based on the set of data given in Table 6, calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient to three decimal places.
For the following exercises, use Table 4 which shows the percent of unemployed persons 25 years or older who are college graduates in a particular city, by year. Determine whether the trend appears linear. If so, and assuming the trend continues, find a linear regression model to predict the percent of unemployed in a given year to three decimal places.
Table 6 shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to 2012. a. Let x represent time in years starting with x=0 for the year 1997. Let y represent the number of seals in thousands. Use logistic regression to fit a model to these data. b. Use the model to predict the seal population for the year 2020. c. To the nearest whole number, what is the limiting value of this model?
If we performed a t-test, how many people would be in the study based on the regression model in photo.
A regression was run to determine if there is a relationship between hours of tv watched per day (x) and number of sit-ups a person can do (y)
For the regression equation, Ŷ = –2X + 6, what can be determined about the correlation between X and Y?
Use the regression line to estimate the number of trials it would take to learn these tricks if a dolphin received five treats per trick. Y for X = 5 would be _________.
The researchers decide to use simple linear regression to obtain a regression equation that would allow them to predict how many meals would be eaten according to a preference for exotic foods. The following regression equation is obtained: Y = 2.185 + 0.523X How many meals would someone be predicted to eat if they obtain a score of 3.8 on food preference ?
A study of king penguins looked for a relationship between how deep the penguins dive in meters xx to seek food and how long they stay underwater in minutes yy. Based on sample data, the regression line is found to be y^=2.69+0.0116x Use the regression line to estimate how long a typical dive of 200 meters would last. Round your answer to two decimal points.
A regression between foot length (y) ( in cm) and height (x) ( in inches) for 33 students resulted in the following regression equation: y^=10.9+0.23x One student in the sample was 73 inches tall with a foot length of 29 cm. What is the residual for this student?
A group of students looked to see if there was a linear relationship between the number of hours spent on social media per day (x) and number of sit-ups a person can do in one minute (y).After gathering data from their class, the students ran LinReg regression on their calculator, which gave them: y = ax + b a = -1.794 b = 36.334 Based on that result, how many sit-ups would you expect a person who spends 6 hours of on social media to be able to do in one minute? Round to the nearest whole number of sit-ups.

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