When rs = 0.3 and x = 10. It was later discovered that the difference in ranks in two subjects by one of the student was wrongly taken as 7 instead of 5. Find the correct value of co-efficient of rank correlation.

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Q: 70 63 60 30 20 20 15 10 8 None Both Legs Only Wheels Only Type of Robotic Limbs Number of Robots

A: The handwritten solution.

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Q: IID Suppose X1,..., X, N(u,o2). Construct a 95% confidence interval for o? when µu is known.

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A: Formula : Z =(X - μ)/σ