Biology Forums - Study Force

With  = .05 and df = 8, the critical values for a two-tailed t test are t = 2.306. Assuming all other factors are held constant, if the df value were increased to df = 20, what would happen to the critical values for t?
 
  A) They would increase (move farther from zero).
  B) They would decrease (move closer to zero).
  C) They would stay the same.
  D) There is not enough information to answer.

Question 2

A chi-square test for independence has df = 3. What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample?
 
  A) four
  B) six
  C) eight
  D) nine

Question 3

With  = .01 the two-tailed critical region for a t test using a sample of n = 16 subjects would have boundaries of ____.
 
  A) t = 2.602
  B) t = 2.583
  C) t = 2.947
  D) t = 2.921

Question 4

A chi-square test for independence is being used to evaluate the relationship between two variables, one of which is classified into three categories and the second of which is classified into four categories. The chi-square statistic for this test would have a df value equal to ____.
 
  A) 6
  B) 7
  C) 10
  D) 11

Question 5

If other factors are held constant, which set of sample characteristics is most likely to reject a null hypothesis stating that m = 80?
 
  A) M = 85 for a sample of n = 25
  B) M = 85 for a sample of n = 100
  C) M = 90 for a sample of n = 25
  D) M = 90 for a sample of n = 100

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Helps a lot <3 Now I'm ready for my quiz

thank you