Illustration 11.13. From the following frequéncy distribution cal-culate the first four moments, B1 and B2.Class10-14115-19420-248.25-291930-343535-392040-4445 –49150-545

Answered: Image /qna-images/answer/dad24353-7b4f-41d4-a4e2-66f1bdc858d5.jpg

Answered: Illustration 11.13. From the following…

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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Q1: The data in the following table are the mathematic degrees of 150 pupil Mathematic 10-19 | 20-29 30-39 40-49 50-59 60-69 70-79 80-89 90-99 degrees Pupils (fi) 2 13 29 50 25 14 7 5
Question 2: The table below shows the amount of time a group of students spent revising for an end of year exam and the score they achieved in the exam: Hours 6 8 10 13 14 15 16 18 25 of revision Exam 20 28 23 85 63 52 60 58 68 69 80 score a- Draw a scatter plot to represent the above information. b- Is there a relation between the number of hours of revision and the exam scores? c- Describe the relationship between the time spent revising and the score achieved in the exam. d- One point on the graph is an outlier. How many hours of revision did this student do? 32
#3
Group I Given N1 = 20 E(X- 8) = 10 E(X-8)? = 152 50. Group II N2 = 30 (Y- 10) = - 15 E(Y-10)2 = 300 %3D %3D %3D Find arithmetic mean and standard deviation of each group and the combined arithmeti nean, standard deviation and the overall coefficient of variation.
Example 4 Locate the mode graphically for the given frequency distribution. 50–60 40-50 С. I. : 10-20 20-30 30-40 60-70 40 25 10 f. 12 35
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Swordfish have a unique "heater organ" that maintains elevated eye and brain temperatures when hunting in deep, cold water. The following graph illustrates the results of a study by Fritsches et al. (2005) that measured how the ability of swordfish retinas to detect rapid motion, measured by the flicker fusion frequency, changes with eye temperature. 50 40- 30- 20 10- 0. 10 15 20 25 Eye temperature ("C) Whitlock & Schluter, The Analysis of Biologica Deta Se 2020 W.H. Freeman and Company The 20 points in the graph were obtained from measurements of 6 swordfish. Can you treat the 20 measurements as a random sample? No, because the selection of the measurements is not independent. Yes, because otherwise the results would not be published. Yes, because the researchers can make a scatter plot only based on the random sample. ONo, because the researchers should have studied at least 10 swordfish. Flicker fusion frequency (hertz)
Q. 29 unit 4
#3.3 The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below.Actress left parenthesis years right parenthesis27263326332629372933Actor left parenthesis years right parenthesis68333840323154423741a. Use the sample data with a 0.05 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). test statistic P-value conclusion construct the confidence interval that can be used for the hypothesis test what feature of confidenc interval leads to the sme conclusion

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Illustration 11.13. From the following frequéncy distribution cal- culate the first four moments, Bi and B2. Class f 1 10-14 15-19 20-24 8 25-29 19 30-34 35 35-39 20 40-44 45-49 1 50--54 5