Question 7of 9 Step 1 of 101:22:25Suppose that prices of recently sold homes in one neighborhood have a mean of $225,000 with a standard deviationof $6550. Using Chebyshev's Theorem, what is the minimum percentage of recently sold homes with prices between$211,900 and $238,100? Round your answer to one decimal place.AnswerHow to enter your answer (opens in new window) 2 PointsKeypadKeyboard ShortcutsAt least%ev

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Answered: Question 7 of 9 Step 1 of 1 01:22:25…

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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101 d-e please
Question 23 A test had 12 items. A new version of a test was made by adding a set of 12 items which resembles the original 12-item test. The new test having 24-items was administered a group of students. The mean and the standard deviation of the new 24-item test scores were 18 and 6, respectively. The difference score between the original 12-item test and the new set of 12 items was calculated. The standard deviation of the difference scores was 3. Estimate reliability.
Question 1 ABC Restaurant has made a forecast for last week's operations vs Actual result of the forecast last week. Period Monday Tuesday Actual 112 110 113 120 140 Forecast 115 104 Wednesday 110 Thursday 115 Friday 135 Using this table above, solve for Mean Absolute Deviation (MAD) Note: Round up to the last 2 decimals example 9.6568->9.66
Question 7 Test scores were recorded for students in a statistics class. The scores for the first test had a standard deviation of 3.8 points. The scores from the second test had a standard deviation of 4.8 points. Choose the correct statement below. O The average test grade rose by 1 point. O The higher standard deviation of the second test indicates higher average scores on the second test than on the first test. O The scores of the second test were closer together than the first test. O The scores of the first test were closer together than the second test. O None of the above statements are true. 1 pts
Which of the following statements is not true? There is only one median for each variable. One definition of the median states that, for an odd number of observations, the median is the middle score when scores are placed in order of magnitude. Another term for the median is 50th percentile. The median is generally more sensitive to (i.e., affected by) the presence of a few extreme observations than is the mean.
Question 6 Which dataset below has the higher standard deviation? Hint: You don't need to calculate it. Dataset A: 2, 8, 10, 5, 7, 6 Dataset B: 100o, 100, 5000, 0, 7500 cannot determine Dataset A the standard deviations are the same Dataset B
QUESTION 3 Two classes A and B of 200 students each take the same examination, out of 100 points. The average grade for class A is 80 with a standard deviation of 10 point s. The average grade for class B is 75 with a standard deviation of 15 points. Assume that the grades in both classes are normally distributed. If the passing grade is 60, how many more students passed the examination in class A than in class B?
Example 2-24. Calculate : (i) Quartile deviation (Q.1D.), and (ii) Mean Deviation (M.D.) from mean, for the following data : Marks. 0-10 10-20 20-30 30-40 40-50 50-60 60-70 No. of Students 6. 8 15
solve question 3
Question 4 3.1 Question: The mean should be rounded in which way? O Up to the next nearest number. To one more digit than digits in the data set. The mean does not have to be rounded. Using the traditional math rounding rule of 5 or higher round up, less than 5 round down. Question 5
Question Number (4)
Question 3 Marquis scored 82 in the class with the mean /5.5 and the standard deviation 5.4, but Rhianna scored 69 in the class with the mean 58.9 and the standard deviation 9.1. Who scored relatively better? (Round the answers to 2 decimal places) Marquis's z-score is Marquis's z-score is Select an answer Select an answer less than greater than the same as and Rhianna's z-score is Rhianna's z-score, we conclude that Select an answer Select an answer Rhianna did relatively better Marquis and Rhianna did relatively the same Marquis did relatively better Since

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