e 6·13. Calculate the mean and standard deviation from the following data :70-7950 5940 4930- 39Value90-9980--8960-69144Frequency122220

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Answered: t o13. Calculate the mean and standard…

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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Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 51.1 miles per hour. Speed (miles per hour) Frequency 42-45 23 The mean of the frequency distribution is (Round to the nearest tenth as needed.) 46 - 49 15 miles per hour. 50-53 54-57 58-61 6 4 Which of the following best discribes the relationship between the computed mean and the actual mean? O A. The computed mean is not close to the actual mean because the difference between the means is less than 5%. OB. The computed mean is close to the actual mean because the difference between the means is more than 5%. O C. The computed mean is close to the actual mean because the difference between the means is less than 5%. O D. The computed mean is not close to the actual mean because the difference between the means is more than 5%.
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Ten friends kept track of how many times they sent a text over a one hour period. The results are in the table below. number of texts 5 6 7 7 8 10 10 15 16 17 They determine that the mean of the data set is 10.110.1, but they also want to know the range and standard deviation. Calculate the range of the data set.Is this correct answer 12? Calculate the POPULATION (since it's just two friends, they're the population) standard deviation of the data set.I have a hard time

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t o13. Calculate the mean and standard deviation from the following data: 70-79 50 59 40 49 30 39 Value 60 69 90-99 80--89 14 4. Frequency : 12 22 20