MATH 117 notes ch 6.1-6.3 - MATH 117 Intro to Statistics Notes Chapter 6(6.1 6.3 Saidi Name Date Notes Chapter 6.1 6.3 Distribution of a Sample

# MATH 117 notes ch 6.1-6.3 - MATH 117 Intro to Statistics...

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MATH 117 – Intro to Statistics Name __________________________________ Notes Chapter 6 (6.1 – 6.3) Date __________________________ Saidi Notes Chapter 6.1 – 6.3 - Distribution of a Sample Proportion You should be able to: 1. Find the center and standard error for a distribution of sample proportions 2. Identify when a normal distribution is an appropriate model .A.Standard Error for Sample Proportion(6.1)The standard error (SE) for a sample proportion pˆis: The standard error for ^pis npqornpp)1(** The larger the sample size, the smaller the SEsenFor Example: The 2010 census reports that, of all the nation’s occupied housing units, 65.1% are owned by the occupants. a. If we were to take random samples of 100 homes, what would the standard error of ^pbe?b. What if the sample size was only 20 homes. What would the standard error be?