Answered

Join IDNLearn.com and start getting the answers you've been searching for. Get timely and accurate answers to your questions from our dedicated community of experts who are here to help you.

The table and scatter plot show the time spent texting, x, and the time spent exercising, y, by each of 9 students last week.The equation of the line of best fit is y = - 0.4x + 6.96 .

The Table And Scatter Plot Show The Time Spent Texting X And The Time Spent Exercising Y By Each Of 9 Students Last WeekThe Equation Of The Line Of Best Fit Is class=
The Table And Scatter Plot Show The Time Spent Texting X And The Time Spent Exercising Y By Each Of 9 Students Last WeekThe Equation Of The Line Of Best Fit Is class=

Sagot :

Explanation

We define the variables:

• x = time spent texting (in hours),

,

• y_O = observed time spent exercising (in hours),

,

• y_P = predicted time spent exercising (in hours).

,

• r = residual (in hours) = y_O - y_P.

From the statement, we have the following equation for the line of best fit:

[tex]y_P=-0.4x+6.96.[/tex]

1) For x = 4.0 we have:

• y_O = 4.50 (from the table),

,

• y_P = 5.36 (by using the formula),

,

• r = 4.50 - 5.36 = 0.86.

2) For x = 5.0 we have:

• y_O = 6.50 (from the table),

,

• y_P = 4.96 (by using the formula),

,

• r = 6.50 - 4.96 = 1.54.

Answer

1) For x = 4.0 we have: y_O = 4.50, y_P = 5.36, r = -0.86

2) For x = 5.0 we have: y_O = 6.50, y_P = 4.96, r = 1.54

Your presence in our community is highly appreciated. Keep sharing your insights and solutions. Together, we can build a rich and valuable knowledge resource for everyone. Thank you for visiting IDNLearn.com. We’re here to provide accurate and reliable answers, so visit us again soon.