New ! Business Maths and Statistics MCQ Practise Tests



Model 2 Mark Creative Questions (New Syllabus) 2020

12th Standard

    Reg.No. :
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Business Maths

Time : 00:30:00 Hrs
Total Marks : 20

    Part A

    10 x 2 = 20
  1. Solve: 2x + 3y = 4 and 4x + 6y = 8 using Cramer's rule.

  2. Evaluate \(\int { x } \sqrt { x+2 } dx\)

  3. Find the demand function for which the elasticity of demand is 1

  4. Form the differential equation of family of rectangular hyperbolas whose asymptotes are the Co-ordinate axes.

  5. When h = 1, find Δ (x3).

  6. Two eggs are drawn at random without replacement from a bag containing two bad eggs and eight good eggs. Find the probability of getting two bad eggs?

  7. If the mean of the binomial distribution with 9 trial is 6, then find the variance.

  8. A sample of 400 students is found to have mean height of 171.38 cms, Can it reasonable be regarded as a sample from a large population with mean height of 171.17 cms and standard deviation of 3.3 cms (Test at 5% level)

  9. The following data shows the value of sample mean (\(\bar{X}\)) and the range R for 10 samples of size 5 each. Calculate the control limits for : mean chart and range chart.

    Sample No. 1 2 3 4 5 6 7 8 9 10
    Mean \(\bar{X}\) 11.2 11.8 10.8 11.6 11.0 9.6 10.4 9.6 10.6 10.0
    Range 7 4 8 5 7 4 8 4 7 9

    (Given for n = 5, A2 = .577, D3 = 0, D4 = 2.115)

  10. The following is the pay-off matrix (in rupees) for three strategies and three states of nature. Select a strategy using maximin principle.

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