Questions 5-7 are related to the following information           In the population of employees in your company, 30 percent contribute to the annual United Way campaign.  You plan to take a sample of size n = 200 and calculate the sample proportion who contribute to United Way. 5 In random samples of size n = , the expected value of the sample proportion is ______.     a 0.35                   b 0.32                   c 0.30                   d 0.021                                         6 In the previous question, the standard error of the sample proportion is:       a 0.0560                   b 0.0467                   c 0.0402                   d 0.0324                                         7 95% percent of sample proportions from samples of size n = 200 deviate from the population proportion of π = 0.30 by no more that ±____ (or ____ percentage points).   a 0.033 (3.3 percentage points.)             b 0.041 (4.1 percentage points.)             c 0.051 (5.1 percentage points.)             d 0.064 (6.4 percentage points.)

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Q: Ask Your Teacher   A news article estimated that only 4% of those age 65 and older who prefer…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.