A sample was taken of computation errors on an exam: 4, 7, 3, 8, ...

[mmm]

A sample was taken of computation errors on an exam: 4, 7, 3, 8, 4, 4, 6, 1, 5, 2, 4, 8, 5, 4, 5. What value should be used for the population standard deviation?
 
  A) 0.51
  B) 1.99
  C) none, since the population standard deviation should never be estimated
  D) 1.92

Question 2

When testing the significance of the regression, if the value of Significance F is ________, the null hypothesis is rejected.
 
  A) less than the p-value
  B) more than the level of significance
  C) more than the p-value
  D) less than the level of significance

[asware1]

Answer to Question 1

A

Answer to Question 2

D