Business Statistics - Study Mode
[#101] Most experimental subjects try to help the researcher by doing their best to perform as they think they should. This problem is called
Correct Answer
(D) demand characteristics
[#102] The inventory application is designed to
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(D) None of these
[#103] The probable error can be calculated by
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(A) $$0.6745left[ {frac{{1 - {r^2}}}{{sqrt N }}}
ight]$$
[#104] Match the following. List-I List-II a. Judgement 1. Probability sampling b. Stratified 2. Non-random sampling c. Cluster 3. Non-probability sampling d. Quota 4. Random sampling
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(A) a-2, b-1, c-4, d-3
[#105] Which of the following statements are true? 1. The classical approach to probability theory requires that the total number of possible outcomes be known or calculated and that each of the outcomes be equally likely. 2. A marginal probability is also known as unconditional probability. 3. For three independent events, the joint probability of the three events, P (ABC) = P (A) × P (B/A) × P (C/AB) 4. Two events are mutually exclusive, exhaustive and equally likely, the probability of either event A or B or both occurring P(A or B) = P(A) + P(B)
Correct Answer
(C) 1, 2 and 4