Variability of Sample Estimates A political campaign sends volunteors out into the various parts of the state to got a sense of how woll thoir candidate will do in an upcoming eicction. Thir volunteers each get a random sample of 10 people in tho state and find the proportion of poople who are expecting to vote for thar carcditate. The samp" proportions are summarized in the histogram. The mean of these aample proportions is 0.55, and the standard daviaton is 0. 15. 10 Rocal that, for nomally distributed data, about 95% of the data is within 2 standard deviations of the mean. 9. What peroentage of sample proportions arc within 2 standard doviations of the mean for those cata? Does this match what we expect from approximately norTially distributod data? Explain or sow your reasoring. 6. 5. 4 3 Share with Clasn 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 sample proportion of voters for our candidate

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Variability of Sample Estimates
A political campaign sends volunteers out into the various parts of the state to get a sense of how well their candidate will do in an upcoming elcction. Thirty
volunteers each get a random sample of 10 people in tho state and find the proportion of people who are expecting to vote for ther candidate. The sample
proportions are summarized in the histogram.
The mean of these sample proportions is 0.55, and the standard deviation is 0.15.
10
Recal that, for normally distributed data, about 95% of
the data is within 2 standard deviations of the mean.
9
What peroentage of sample praportions are within 2
standard doviations of the rmean for these data? Does
this match what we expect from approximately norrally
distributed data? Explain or snow your reasoning.
7+
4
2
Share with Clasa
1
O 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
sample proportion of voters for our candidate
7
9
6
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3
4
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S
D
caps lock
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ift
option
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control
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Transcribed Image Text:ll T-Mobile LTE 10:58 PM 85% Done 1 of 3 x MM aM O o e 3 0 FU O a . 9 E F TI 9 0 E FJJ +w w TJ FX G O + A student.desmos.com/activitybuilder/studenti607e171508264d0ebdre(178tseroenida=4 Upcusa E Apps OnCeure Cornec.. Clara Destiny she. 3 Emelyment 9 Emcloyment Center + Locin I Sessken Espratinn b Seling Assdilu. A Hanin E Vow Pe Prap. Nrra on Fe Pat = Unit 4, Lesson 9: Variability in Samples Desiny Ofoogbi 4 12 Noc > Variability of Sample Estimates A political campaign sends volunteers out into the various parts of the state to get a sense of how well their candidate will do in an upcoming elcction. Thirty volunteers each get a random sample of 10 people in tho state and find the proportion of people who are expecting to vote for ther candidate. The sample proportions are summarized in the histogram. The mean of these sample proportions is 0.55, and the standard deviation is 0.15. 10 Recal that, for normally distributed data, about 95% of the data is within 2 standard deviations of the mean. 9 What peroentage of sample praportions are within 2 standard doviations of the rmean for these data? Does this match what we expect from approximately norrally distributed data? Explain or snow your reasoning. 7+ 4 2 Share with Clasa 1 O 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 sample proportion of voters for our candidate 7 9 6 2 3 4 P Y W E R Q tab K F G A S D caps lock V B ift option command command control option !!
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