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: The table below gives the number of people that bought either product A, gender. Use the table to complete the 95% confidence intervals.

: The table below gives the number of people that bought either product A, gender. Use the table to complete the 95% confidence intervals.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Directions 14: The table below gives the number of people that bought either product A, B, or C and their gender. Use the table to complete the 95% confidence intervals. What are the answers to the following four questions? Gender/Product Product A Product B Product C Total Male 20 40 35 95 Female 30 30 50 110 Total 50 70 85 205 1. Get a 95% confidence interval for the percentage of females that choose product B. 2. How many more females would you need to sample to reduce your margin of error to 3%? 3. Get a 95% confidence interval for the percentage of Product C that are purchased by males. 4. How many more units of product C must be sampled to reduce the margin of error to 3%?
Transcribed Image Text:Directions 14: The table below gives the number of people that bought either product A, B, or C and their gender. Use the table to complete the 95% confidence intervals. What are the answers to the following four questions? Gender/Product Product A Product B Product C Total Male 20 40 35 95 Female 30 30 50 110 Total 50 70 85 205 1. Get a 95% confidence interval for the percentage of females that choose product B. 2. How many more females would you need to sample to reduce your margin of error to 3%? 3. Get a 95% confidence interval for the percentage of Product C that are purchased by males. 4. How many more units of product C must be sampled to reduce the margin of error to 3%?
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