Obtaining secondary data is typically ______ and ______ expensive ...

[Frost2351]

Obtaining secondary data is typically ______ and ______ expensive than obtaining primary data.
 a. faster; more
  b. slower; more
  c. faster; less
  d. slower; less

Question 2

To check if the central limit theorem holds for a sample proportion (and therefore can be used for calculating confidence intervals), the value calculated from np(1p) should be
 a. less than 1 c. less than 25
  b. greater than 5 d. greater than 30

[courtney_bruh]

Answer to Question 1

C

Answer to Question 2

B
The value should be greater than 5 . (Note that this is a guideline that statisticians have found to work well in practice, not a natural law, and is often even stronger than one needed.)

[Frost2351]

Wow, this really help

[milbourne11]

Gracias!