Unit 8 : Statistics And Methodology - Statistics And Methodology Section 1

16. The mean wage of a certain group of workers is 500 rupees and a is 100. Find what percentage of workers get above 375 rupees

  • Option : B
  • Explanation : Z = (X - μ)/σ = (375 – 500)/100 = 1.25 The area according to the table is 0.3944. The total area will be = 0.5 + 0.3944 = 0.8944 or 0.8944 x 100 = 89.44%
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20. Match the following

List-I (Items)List-II (Application)
(A) Probability1. Event
(B) z = (x — μ)/σ2. Distribution
(C) t-test3. Hypothesis test
 4. Normal distribution

CODES

 ABCD
I1234
II3142
III4132
IV1432

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