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A polling agency is investigating the voter support for a ballot measure in an upcoming city election. The agency will select a random sample of 500 voters from one region, Region A, of the city. Assume that the population proportion of voters who would support the ballot measure in Region A is 0.47. Ђор (a) What is the probability that the proportion of voters in the sample of Region A who support the ballot measure is greater than 0.50 ? 1) normal (Sketch curve) 7-score Ssed

A polling agency is investigating the voter support for a ballot measure in an upcoming city election. The agency will select a random sample of 500 voters from one region, Region A, of the city. Assume that the population proportion of voters who would support the ballot measure in Region A is 0.47. Ђор (a) What is the probability that the proportion of voters in the sample of Region A who support the ballot measure is greater than 0.50 ? 1) normal (Sketch curve) 7-score Ssed

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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how would you do part A of this frq? ignore my answer, i was just writing random stuff down. this is a non graded practice frq
Z>P (a) What is the probability that the proportion of voters in the sample of Region A who support the ballot measure is greater than 0.50 ? Z-score 1) normal (Sketch curve) 2) Check large counts 0.0869 Z np=500 (47) 235 ≥10 n(1-P) = 500 (,53)-2657 10 μ he's A polling agency is investigating the voter support for a ballot measure in an upcoming city election. The agency will select a random sample of 500 voters from one region, Region A, of the city. Assume that the population proportion of voters who would support the ballot measure in Region A is 0.47. Presse W47, 0223) ww 475 P=P =0₁47 NBPB=400(151) - 204 ng (1-PB) = 400(149) こ PA-P) VT= p=√√ PO 147.53 47653) 500 The polling agency will take another sample from a different region, Region B, of the city. The agency plans to select a random sample of 400 voters. Assume that the population proportion of voters who would support the ballot measure in Region B is 0.51. (b) Describe the sampling distribution of the difference in sample proportions (Region B minus Region A). too because Region A has a bigger sample, =0223 state that it's 1) normou 2) mean (c) What is the probability that the two sample proportions will differ by more than 0.05 ? 1-.51 =.49 approx.
Transcribed Image Text:Z>P (a) What is the probability that the proportion of voters in the sample of Region A who support the ballot measure is greater than 0.50 ? Z-score 1) normal (Sketch curve) 2) Check large counts 0.0869 Z np=500 (47) 235 ≥10 n(1-P) = 500 (,53)-2657 10 μ he's A polling agency is investigating the voter support for a ballot measure in an upcoming city election. The agency will select a random sample of 500 voters from one region, Region A, of the city. Assume that the population proportion of voters who would support the ballot measure in Region A is 0.47. Presse W47, 0223) ww 475 P=P =0₁47 NBPB=400(151) - 204 ng (1-PB) = 400(149) こ PA-P) VT= p=√√ PO 147.53 47653) 500 The polling agency will take another sample from a different region, Region B, of the city. The agency plans to select a random sample of 400 voters. Assume that the population proportion of voters who would support the ballot measure in Region B is 0.51. (b) Describe the sampling distribution of the difference in sample proportions (Region B minus Region A). too because Region A has a bigger sample, =0223 state that it's 1) normou 2) mean (c) What is the probability that the two sample proportions will differ by more than 0.05 ? 1-.51 =.49 approx.
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