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In a certain presidential election, Alaska's 40 election districts averaged 1,952.8 votes per district for a candidate. The standard deviation was 572.1. (There are only 40 election districts in Alaska.) The distribution of the votes per district for one candidate was bell-shaped. Let X = number of votes for this candidate for an election district. Part (a) State the approximate distribution of X. (Enter your numerical values to one decimal place.) X? Part (b) Is 1,952.8 a population mean or a sample mean? How do you know? A population mean, because all election districts are included. ○ A population mean, because only a sample of election districts are included. ○ A sample mean, because only a sample of election districts are included. ○ A sample mean, because all election districts are included. Part (c) Find the probability that a randomly selected district had fewer than 1,700 votes for this candidate. (Round your answer to four decimal places.) Sketch the graph. 0.0007 0.0006 0.0005 0.0004 0.0007 0.0006 0.0005 0.0004 ΕΛΛ 0.0003 0.0002 0.0001 1000 2000 3000 4000 0.0003 0.0002 0.0001 X 1000 2000 3000 4000 0.0007 0.0007 0.0006 0.0006 0.0005 0.0005 0.0004 0.0004 0.0003 0.0003 0.0002 0.0002 0.0001 0.0001 X о 1000 2000 3000 4000 Write the probability statement. 1000 2000 3000 X 4000 Part (d) Find the probability that a randomly selected district had between 1,800 and 2,000 votes for this candidate. (Round your answer to four decimal places.) Part (e) Find the third quartile for votes for this candidate. (Round your answer up to the next vote.) votes

In a certain presidential election, Alaska's 40 election districts averaged 1,952.8 votes per district for a candidate. The standard deviation was 572.1. (There are only 40 election districts in Alaska.) The distribution of the votes per district for one candidate was bell-shaped. Let X = number of votes for this candidate for an election district. Part (a) State the approximate distribution of X. (Enter your numerical values to one decimal place.) X? Part (b) Is 1,952.8 a population mean or a sample mean? How do you know? A population mean, because all election districts are included. ○ A population mean, because only a sample of election districts are included. ○ A sample mean, because only a sample of election districts are included. ○ A sample mean, because all election districts are included. Part (c) Find the probability that a randomly selected district had fewer than 1,700 votes for this candidate. (Round your answer to four decimal places.) Sketch the graph. 0.0007 0.0006 0.0005 0.0004 0.0007 0.0006 0.0005 0.0004 ΕΛΛ 0.0003 0.0002 0.0001 1000 2000 3000 4000 0.0003 0.0002 0.0001 X 1000 2000 3000 4000 0.0007 0.0007 0.0006 0.0006 0.0005 0.0005 0.0004 0.0004 0.0003 0.0003 0.0002 0.0002 0.0001 0.0001 X о 1000 2000 3000 4000 Write the probability statement. 1000 2000 3000 X 4000 Part (d) Find the probability that a randomly selected district had between 1,800 and 2,000 votes for this candidate. (Round your answer to four decimal places.) Part (e) Find the third quartile for votes for this candidate. (Round your answer up to the next vote.) votes

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.1: Stem-and-leaf Plots And Histograms
Problem 10E
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In a certain presidential election, Alaska's 40 election districts averaged 1,952.8 votes per district for a candidate. The standard deviation was 572.1. (There are only 40 election districts in Alaska.) The distribution of the votes per district for one candidate was bell-shaped. Let X = number of votes for this candidate for an election district. Part (a) State the approximate distribution of X. (Enter your numerical values to one decimal place.) X? Part (b) Is 1,952.8 a population mean or a sample mean? How do you know? A population mean, because all election districts are included. ○ A population mean, because only a sample of election districts are included. ○ A sample mean, because only a sample of election districts are included. ○ A sample mean, because all election districts are included. Part (c) Find the probability that a randomly selected district had fewer than 1,700 votes for this candidate. (Round your answer to four decimal places.) Sketch the graph. 0.0007 0.0006 0.0005 0.0004 0.0007 0.0006 0.0005 0.0004 ΕΛΛ 0.0003 0.0002 0.0001 1000 2000 3000 4000 0.0003 0.0002 0.0001 X 1000 2000 3000 4000 0.0007 0.0007 0.0006 0.0006 0.0005 0.0005 0.0004 0.0004 0.0003 0.0003 0.0002 0.0002 0.0001 0.0001 X о 1000 2000 3000 4000 Write the probability statement. 1000 2000 3000 X 4000 Part (d) Find the probability that a randomly selected district had between 1,800 and 2,000 votes for this candidate. (Round your answer to four decimal places.) Part (e) Find the third quartile for votes for this candidate. (Round your answer up to the next vote.) votes
Transcribed Image Text:In a certain presidential election, Alaska's 40 election districts averaged 1,952.8 votes per district for a candidate. The standard deviation was 572.1. (There are only 40 election districts in Alaska.) The distribution of the votes per district for one candidate was bell-shaped. Let X = number of votes for this candidate for an election district. Part (a) State the approximate distribution of X. (Enter your numerical values to one decimal place.) X? Part (b) Is 1,952.8 a population mean or a sample mean? How do you know? A population mean, because all election districts are included. ○ A population mean, because only a sample of election districts are included. ○ A sample mean, because only a sample of election districts are included. ○ A sample mean, because all election districts are included. Part (c) Find the probability that a randomly selected district had fewer than 1,700 votes for this candidate. (Round your answer to four decimal places.) Sketch the graph. 0.0007 0.0006 0.0005 0.0004 0.0007 0.0006 0.0005 0.0004 ΕΛΛ 0.0003 0.0002 0.0001 1000 2000 3000 4000 0.0003 0.0002 0.0001 X 1000 2000 3000 4000 0.0007 0.0007 0.0006 0.0006 0.0005 0.0005 0.0004 0.0004 0.0003 0.0003 0.0002 0.0002 0.0001 0.0001 X о 1000 2000 3000 4000 Write the probability statement. 1000 2000 3000 X 4000 Part (d) Find the probability that a randomly selected district had between 1,800 and 2,000 votes for this candidate. (Round your answer to four decimal places.) Part (e) Find the third quartile for votes for this candidate. (Round your answer up to the next vote.) votes
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