From a sample of 25 items, a sample standard deviation of 4.56 ...

[jon_i]

From a sample of 25 items, a sample standard deviation of 4.56 ounces was just measured. What value should be used for the population standard deviation?
 
  A) 0.91 ounces
  B) 4.56 ounces
  C) none, since the population standard deviation cannot be estimated
  D) 0.18 ounces

Question 2

Adding an independent variable to a multiple regression model will ________.
 
  A) maximize the Adjusted R2.
  B) increase the value of the R2
  C) lead to a negative t-statistic
  D) decrease the p-value

[leahm14]

Answer to Question 1

B

Answer to Question 2

B