Question: 2. Activity Sampling (20%) (a)What are the two basic principles of activity sampling? (b) Why do we use random number generator to create observation times?

2. Activity Sampling (20%) (a)What are the two

2. Activity Sampling (20%) (a)What are the two basic principles of activity sampling? (b) Why do we use random number generator to create observation times? (c)List the equation for Font ulating the standard deviation of samples X1, X2 ... Xn. (no partial credit). (d) Use 8 words or less to explain the meaning of standard deviation to a construction foreman. (e) What are the three commonly used techniques for activity sampling? When and why these techniques are used over others, such as Crew-Balance Chart. 2. Activity Sampling (20%) (a)What are the two basic principles of activity sampling? (b) Why do we use random number generator to create observation times? (c)List the equation for Font ulating the standard deviation of samples X1, X2 ... Xn. (no partial credit). (d) Use 8 words or less to explain the meaning of standard deviation to a construction foreman. (e) What are the three commonly used techniques for activity sampling? When and why these techniques are used over others, such as Crew-Balance Chart

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