What percent of all small companies receiving questionnaires responded?a. 12.5%b. 20.8%c. 33.3%d. 50.8%e. 62.5% 3)Response?YesNoSmall12575Business sizeMedium81119Large40160T1.8 What percent of all small companies receiving questionnaires responded?a. 12.5%b. 20.8%c. 33.3%d. 50.8%e. 62.5%

Small Medium Large Total Yes 125 81 40 246 No 75 119 160 354 Total 200 200 200 600

Answered: What percent of all small companies…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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5.8 As part of the recruitment of new businesses, the city's economic development department wants to estimate the gross profit margin of small businesses (under $1 million in sales) currently residing in the city. A random sample of the previous years annual reports of 15 small businesses shows the mean net profit margin to be 7.2% (of sales) with a standard deviation of 12.5%. a. Construct a 99% confidence interval for the mean gross profit margin of u of all small businesses in the city. b. The city manager reads the report and states that the confidence interval for u constructed in part (a) is not valid because the data are obviously not normally distributed and thus the sample size is too small. Based on just knowing the mean and standard deviation of the sample of 15 businesses, do you think the city man- ager is valid in his conclusion about the data? Explain your answer.
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A=14%B=34%

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What percent of all small companies receiving questionnaires responded? a. 12.5% b. 20.8% c. 33.3% d. 50.8% e. 62.5%