Neuroscientists conducted research in a Canadian prison to see whether solitary confinement affects brain wave activity. They randomly assigned 20 inmates to two groups, assigning half to solitary confinement and the other half to regular confinement. The data follow: Nonconfined Confined
10.7 9.6
10.7 10.4
10.4 9.7
10.9 10.3
10.5 9.2
10.3 9.3
9.6 9.9
11.1 9.5
11.2 9.0
10.4 10.9

Required:
a. Explain why a paired t-test is not appropriate for testing whether the mean alpha wave frequencies are the same in the two groups.
b. Then perform the appropriate test assuming equal variance.

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

answer: 819.89 miles across america

step-by-step explanation: