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A survey of the members of a large professional engineering society is conducted to determine their...

A survey of the members of a large professional engineering society is conducted to determine their views on proposed

changes to an ASTM measurement standard. Overall 80% of the entire membership favor the proposed changes.

(a) If possible, describe the center, dispersion, and shape of the sampling distribution of the proportion of engineers for

samples of size 20 who favor the proposed changes. Explain your answer including which of these three aspects of

distribution you can & cannot describe and why.

(b) If possible, describe the center, dispersion, and shape of the sampling distribution of the proportion of engineers for

samples of size 50 who favor the proposed changes. Explain your answer including which of these three aspects of

distribution you can & cannot describe and why.

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