If all the possible pairs of sample means were obtained from a ...

[ereecah]

If all the possible pairs of sample means were obtained from a single
   population, the mean of the distribution of differences would be
 
  a. a statistic
  b. a parameter
  c. identical with the mean of the distribution of means
  d. equal to one-sixth of the range

Question 2

A researcher in the area of cognitive functioning has designed a new test
  of creativity, called the CIA test (Cognitive Information Assessment). A random sample of ten, five-year-old children is selected and given the test.
 
  A week later the same test was administered for a second time.
  Estimate the reliability of this test.
  Subject  Test Retest
   X Y
  1 . 30 33
  2 . 10 15
  3 . 20 18
  4 . 18 20
  5 . 22 16
  6 . 23 21
  7 . 17 15
  8 . 20 22
  9 . 25 28
  10 . 15 15
 
 
 What will be an ideal response?

[strudel15]

Answer to Question 1

b

Answer to Question 2

rtt =.842 Sig p<.01

[ereecah]

Thank you!

[strudel15]

Happy to help