In a group of 100 CA students, 30 are male, 55 are studying for the Certificate Level and 6 of the male students are not studying for the Certificate Level. A student chosen at random is female. What is the probability that she is not studying for the Certificate Level?

A. The central limit theorem B. The law of statistical regularly C. The law of inertia of large numbers D. None of the above

A. Sampling error B. Measurement error C. Coverage error D. Non-response error

A. Both (A) and (R) are true B. (A) is true, but (R) is false C. (A) is false, but (R) is true D. Both (A) and (R) are false

A. 0 B. 1 C. 0.4 D. 0.8