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Author Question: A private opinion poll is conducted for a politician to determine what proportion of the population ... (Read 125 times)

luminitza

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on: Jul 25, 2018
A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national parks.
 
  How large a sample is needed in order to be 90 confident that the sample proportion will not differ from the true proportion by more than 6?
  A) 188 B) 376 C) 7 D) 114

Question 2

The amount of soda a dispensing machine pours into a 12 ounce can of soda follows a normal distribution with a mean of 12.54 ounces and a standard deviation of 0.36 ounce.
 
  The cans only hold 12.90 ounces of soda. Every can that has more than 12.90 ounces of soda poured into it causes a spill and the can needs to go through a special cleaning process before it can be sold. What is the probability a randomly selected can will need to go through this process?
  A) 0.8413 B) 0.3413 C) 0.6587 D) 0.1587


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pratush dev

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Reply #1 on: Jul 25, 2018
Answer to Question 1

A

Answer to Question 2

D


luminitza

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Reply 2 on: Jul 25, 2018
YES! Correct, THANKS for helping me on my review

coreycathey

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Reply 3 on: Yesterday
Wow, this really help

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