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Question 1

If a dataset is normally distributed, which of the following is true about its skewness?

Options :

A : The skewness can be any value, as it is independent of the distribution type.

B : The distribution has a skewness of zero.

C : The distribution is negatively skewed.

D : The distribution is positively skewed.

Answer: B

Question 2

If a marble is drawn at random from a bowl containing 5 identical red marbles and 5 identical blue marbles, what is the probability that the marble drawn is blue?

Options :

A : 1/2

B : 1/10

C : 1/5

D : 2/5

Answer: A

Question 3

Which view in orthographic projection is also known as the plan view?

Options :

A : Top view

B : Bottom view

C : Front view

D : Side view

Answer: A

Question 4

The 'root' of a screw thread is:

Options :

A : The point where the thread intersects the screw-s shank.

B : The deepest part of the thread, between two flanks.

C : The starting point of the thread on the screw.

D : The overall length of the threaded portion.

Answer: B

Question 5

Which statement best describes a key difference between Lean and Six Sigma?

Options :

A : Six Sigma uses value-stream mapping, whereas Lean uses 5S.

B : Lean is a data-driven approach, whereas Six Sigma focuses on team collaboration.

C : Lean emphasizes speed and efficiency, while Six Sigma focuses on quality and precision.

D : Six Sigma aims to eliminate waste, whereas Lean targets process improvement.

Answer: C