The following table shows the test scores and sleep averages of several students. Hours of sleep (x) 7 7 7 6 8 8 9 5 6 7 7 9 8 8 10 8
Test score (y) 90 75 70 70 85 95 90 60 65 80 70 85 85 100 95 90
(a) Use graphing technology (TI calculator or Desmos) to find the linear regression equation that models
the data. Let x equal the hours of sleep and y equal test score. Explain the steps you use.
(b) Use the equation to determine the approximate test score of a student who sleeps an average of 7.5
hours a night. Show your work.

23

step-by-step explanation:

5x+2x=49

7x=49

x=7. 35 apples

boxplot

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v