Question 1/ The IRS claims it takes an average of 3.5 hours to complete a 1040 tax form. Assume the time to complete the form is normally distributed with a standard deviation of 15 minutes or 0.25 hours. Use the Cumulative Z-Score Table to answer the following questions. Write your answer as a percent using 2 decimal places. What percent of people would you expect to complete the form in less than 3.825 hours? What percent of people would you expect to complete the form in more than 3.825 hours? What percent of people would you expect to complete the form in less than 3 hours? What percent of people would you expect to complete the form in more than 3 hours? What percent of people would you expect to complete the form between 3 and 3.825 hours? P

Question 1/ The IRS claims it takes an average of 3.5 hours to complete a 1040 tax form. Assume the time to complete the form is normally distributed with a standard deviation of 15 minutes or 0.25 hours. Use the Cumulative Z-Score Table to answer the following questions. Write your answer as a percent using 2 decimal places. What percent of people would you expect to complete the form in less than 3.825 hours? What percent of people would you expect to complete the form in more than 3.825 hours? What percent of people would you expect to complete the form in less than 3 hours? What percent of people would you expect to complete the form in more than 3 hours? What percent of people would you expect to complete the form between 3 and 3.825 hours? P

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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The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the histogram. Complete the table. Round values to the nearest tenth as needed. Graph/chart f Midpoint x xf 70.5 Ay 30- 92.5 26 25- 114.5 136.5 20- 158.5 15- 12 Ef = Exf = 10- Find the mean of the data set. 5- X = (Round to the nearest tenth as needed.) 48.5 70.5 92.5 114.5 136.5 158.5 Complete the table. Round values to the nearest tenth as needed. Midpoint x (x-x)? (x-x)?f X-X 70.5 Print Done 92.5 114.5 136.5 158.5 (x-x)?r= ] of
homework #19
The coefficient of variation CV describes the standard deviation as a percent of the mean. Because it has no units, you can use the coefficient of variation to compare data with different units. Find the coefficient of variation for each sample data set. What can you conclude? Standard deviation CV = • 100% Mean E Click the icon to view the data sets. Data Table ..... CVneights = 71.2% (Round to the nearest tenth as needed.) Heights Weights 68 181 77 169 72 167 72 207 71 177 70 175 78 185 69 186 67 221 70 216 67 209 73 206
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