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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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Hospital Emergency Waiting Times The mean of the waiting times in an emergency room is 87 minutes with a standard deviation of 17.3 minutes for people who are admitted for additional treatment. The mean waiting time for 74 minutes with a standard deviation of 9.7 minutes. Which times are more variable? Calculate the coefficient of variation. Round your answers to one decimal place. Additional treatment CVar: ___% Discharged CVar: ___%
29 39 42 55 63 77 79 88 88 e = (Please enter an exact answer.) standard deviation (DI 27
Please solve part a, c & e The song-length of tunes in the Big Hair playlist of a Statistics professor's mp3-player varies from song to song. This variation can be modeled by the Normal distribution, with a mean song-length of μ=4.25 minutes and a standard deviation of σ=0.7 minutes. Note that a song that has a length of 4.5 minutes is a song that lasts for 4 minutes and 30 seconds.While listening to a song, the professor decides to shuffle the playlist, which means the mp3-player is to randomly pick a song within this particular playlist, and play this next.If using/working with z-values, use three decimals.(a) What is the probability that the next song to be played is between 3.5 and 4.95 minutes long? Answer to four decimals. __________ (b) What proportion of all the songs in this playlist are longer than 5 minutes? Use four decimals in your answer. 0.142 (c) 10% of all the songs in this playlist are at most how long, in minutes? Enter your answer to two decimals, and…
A California lake has been stocked with rainbow trout. These trout have an average length of 24 inches, with a standard deviation of 3 inches. Someone goes fishing and catches a trout that is 26.25 inches long. Express the length of this trout in standard units, relative to all the trout that were used to stock the lake. Choose the answer below that is closest.
STATISTICS (THUMBS UP WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTION. DO NOT USE EXCEL OR SOFTWARE. DO NOT SHORTCUT. MANUAL COMPUTATIONS NEEDED. SEE THE ATTACHED IMAGE FOR THE AREAS UNDER NORMAL CURVE IF NECESSARY) The mean life of a tire is 30 000 km. The standard deviation is 2000 km. a. About 68% of all tires will have a life between km and km. b. What percent of the tires will have a life that exceeds 26 000 km? c. If a company purchased 2000 tires, how many tires would you expect to last more than 28 000 km?
K Use the body temperatures, in degrees Fahrenheit, listed in the accompanying table. The range of the data is 3.6°F. Use the range rule of thumb to estimate the value of the standard deviation. Compare the result to the actual standard deviation of the data rounded to two decimal places, 0.67°F, assuming the goal is to approximate the standard deviation within 0.2°F. Click the icon to view the table of body temperatures. The estimated standard deviation is F. (Round to two decimal places as needed.) Data table ... 98.5 98.2 98.6 98.4 98.8 98.9 99.1 98.6 97.8 97.6 98.4 98.8 97.1 98.1 98.4 98.3 97.5 98.7 99 96.9 97.1 99.2 98 98.9 97.5 99.2 98.3 99.2 97.9 97.7 98.6 98.2 97.2 98.1 97.8 96.8 97.4 98.3 99.9 98.8 99 98.4 98.8 98.6 98 6.8 98.6 98 98.4 98.2 97.6 98.1 97.6 97.1 99 98.1 97.6 99.2 96.3 97.3 97.9 96.9 97.6 97.6 97.5 97.9 98.3 98.5 98.4 98.3 98 7.6 97.5 97.9 98.3 99.3 98.1 98.9 98.1 98.1 98.6 98.2 99 98.8 97.9 98.2 98.4 98.8 98 98.7 97.3 98.1 99.4 97.9 97.9 98.7 98.3 98.3 97.2 97.9…
The heights of women are normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches. The heights of men are also normal with a mean of 70 inches. Approximately what percent of women are taller than a man of average height? O 98% O 5% O 95% O 2% 6%
IQ scores are normally distributed with a mean of 100 and standard deviation 16. Calculate the z-score for an IQ of 76. Include one decimal place in your answer. Add your answer
The scores on the Accuplacer test and High School GPAS are normally distributed. The Accuplacer test had a mean of 35 and a standard deviation of 9. High School GPAS had a mean of 2.8 and a standard deviation of 0.2. What high school GPA do you need to equal a score of 56 on the Accuplacer test? Give answer to two decimal placés. Check Answer
SAT : MEAN IS 500 STANDARD DEVIATION IS 100 ACT: MEAN IS 20 STANDARD DEVIATION IS 6
Find the range and the standard deviation (correct to two decimal places). 82, 92, 97, 97, 97 range standard deviation

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newborn babies weigh an average of 7.5 pounds with a standard deviation of 1.25 pounds find the zscore for a baby who weighs 6.70 pounds.