3. The data {15, 20, 20, 25} represent odometer readings (in 10000 km) for some used cars on a used-car lot.Use the data to determine the standard deviation.PopulationSampleΣ(x-x)n-10 =Σ(x-μ)²NS =

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Answered: 3. The data {15, 20, 20, 25} represent…

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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4.7, 5.0, 5.5, 4.2, 5.5, 5.9, 4.7, 5.4, 3.8 - samples of % peroxide in samples taken. determine the interquartile range, variance, and standard deviation of the percent peroxide data. use 2 decimal points for rounding and provide units
Exhibit 11-3 The contents of a sample of 26 cans of apple juice showed a standard deviation of 0.06 ounce. We are interested in testing to determine whether the variance of the population is significantly more than .003. Refer to Exhibit 11-3. The p-value for this test is a) .05 b) greater than .10 c) less than .10 d) 1.96
A team of ten (10) construction workers who are working on a project are classified according to the skill levels, Classes A to D. The table below shows the number of workers in each of the four (4) classes and their respective hourly pay-rate. Pay-rate (Rands/hour) Number of workers Class A 80 Class B 60 Class C 55 Class D 50 4. Calculate the mean hourly pay-rate for the 10 workers. A. R24.50/hour B. R57/hour C. R57.50/hour D. R61.75/hour
The mean and standard deviation marks of 4 different classes of the same grade are recorded in the table below. Mean mark Standard deviation Class 1 Class 2 Class 3 83 9 78 5 71 14 Class 4 64 5 Using the coefficient of variation, determine which class has marks that more spread out about the mean. A. Class 1 B. Class 2 C. Class 3 D. Class 4
number 3, thank you
The goal of the one-sample t-test is to: Group of answer choices describe the location of a score within a distribution compare the mean of a sample to the population mean. compare the means of two samples. compare the standard deviation of a sample to the standard deviation of the population.
Step 3 In order to use the defining formula for sample standard deviation, it is helpful to first calculate (x – x)² for each data value in the data set 1, 6, 7, 8, 9. Use the values in the data set and the previously determined mean, x = 6.2, to complete the following table. 7 8 6.2 6.2 6.2 6.2 6.2 х — х -5.2 0.8 2.8 (x – x)² 27.04 0.04 3.24 Submit Skip (you cannot come back)

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3. The data {15, 20, 20, 25} represent odometer readings (in 10000 km) for some used cars on a used-car lot. Use the data to determine the standard deviation. Population Sample Σ(x-μ)² Σ(x-x) N n-1 0 = S =