mock 2 paper 2

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mock 2 paper 2

Postby vandana.jain » Sat Nov 10, 2012 4:39 pm

in question 23 how to calculate this and why 2nd option and 4th option is not correct

question-35 how to calculate this?


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Re: mock 2 paper 2

Postby content.pristine » Mon Nov 12, 2012 1:01 pm

Is your query with respect to:

23. 23. Alan Junwen is a student of Quantitative studies. He is learning about various distributions that a data can possess. He has prepared a report on t-distribution in which he has noted down the following characteristics of t-distribution.
I. When compared to the normal distribution, the t-distribution is more peaked with more area under the tail.
II. It is defined by single parameter which is degrees of freedom. For a sample of 30 observations, the degrees of freedom for t-distribution are 28.
III. The confidence interval for a random variable that follows a t-distribution must be narrower when the degrees of freedom are less for a given significant level
IV. T-distribution is symmetrical about its mean. It is appropriate to use t-distribution when sample is less than 30 from populations with known variance.
Which of the characteristics told by Junwen about t-distribution is/are correct:
A. I and III
B. I and II
C. IV only
D. None is correct


35. A research Analyst predicts that stock of SYG Ltd will either remain flat or will decrease in next 5 days. The probability of SYG remaining flat is 0.28. The expected value and variance of the number of days when SYG stock will decrease in a 5 day period would be respectively:
A. 1.4&1.01
B. 3.6 & 1.01
C. 1.4 & 1.96
D. 3.6 & 1.96

Let me know..


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