A random sample of 60 elements was selected from a population of size 400. The sample proportion 
a.Estimate the standard error of the proportion.
b.Develop an approximate 95% confidence interval for the population proportion.
Definitions:
Industrial Product Presentations
Demonstrations or showcases aimed at highlighting the features and benefits of products designed for industrial or commercial use.
Complex Products
Complex products are goods or services with multiple components or features that require detailed explanation or customization.
Visual Aids
Tools such as charts, videos, and slides used to enhance understanding, retention, and appeal in presentations or meetings.
Retain Details
The ability to keep or remember specific pieces of information or data accurately over time.
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