Author Question: In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ... (Read 104 times)

Diane · **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

Jbrasil · **Reply #1 on:** Jul 25, 2018

Answer to Question 1

A

Answer to Question 2

B

Diane · **Reply #2 on:** Jul 25, 2018

TY

Jbrasil · **Reply #3 on:** Jul 25, 2018

You're welcome

Author Question: In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ... (Read 104 times)

Diane

In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ...

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Jbrasil

In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ...

Diane

In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ...

Jbrasil

In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are ...