In a congressional district, 55% of registered voters are Democrats. A polling organization selects a random sample of 500 registered voters from this district. Let p̂ = the proportion of Democrats in the sample. a. Identify the mean of the sampling distribution of p̂. b. Calculate and interpret the standard deviation of the sampling distribution of p^. Verify that the 10% condition is met. c. Describe the shape of the sampling distribution of p̂. Justify your answer.

In a congressional district, 55% of registered voters are Democrats. A polling organization selects a random sample of 500 registered voters from this district. Let p̂ = the proportion of Democrats in the sample. a. Identify the mean of the sampling distribution of p̂. b. Calculate and interpret the standard deviation of the sampling distribution of p^. Verify that the 10% condition is met. c. Describe the shape of the sampling distribution of p̂. Justify your answer.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 5E

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