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Author Question: In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ... (Read 120 times)

Diane

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on: Jul 25, 2018
In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are opposed. For groups of 120 voters, find the mean for the random variable X, the number who oppose the measure.
 
  A) 36 B) 84 C) 30 D) 70
 
  Find the standard deviation of the binomial random variable.

Question 2

Given that 300 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading between 140 and 149 inclusive?
 
  A) 8 B) 24 C) 2 D) 240


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Jbrasil

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

A

Answer to Question 2

B


Diane

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Reply #2 on: Jul 25, 2018
TY


Jbrasil

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Reply #3 on: Jul 25, 2018
You're welcome


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