23 Calculate the coefficient of concurrent deviation from the following:6055505630704035808075403575638035208065t0o to borlikwoled nevig 2s aeoy OF to bolteq s tot6060(B.Com., Osmania Univ., 2012)

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Answered: 23. Calculate the coefficient of…

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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1. The following table gives the estimated stature (length, in cm) of human fetuses at various times (in weeks) since conception. Age_(x) a. b. 18 20 22 24 26 28 30 32 34 36 38 40 Stature_(y) 19.72 23.41 27.80 30.86 33.17 36.27 39.37 41.48 43.51 45.62 48.50 49.81 Find the coefficient of correlation. How closely do the data seem to fit a straight line? Find the equation of the least squares line. C. Plot the data and least squares line on the same graph. Does the line accurately fit the data? d. If this formula continues to be accurate, what would we expect for the stature of a 45-week- old fetus?
Suppose the commuting time on a particular train is uniformly distributed between 34 and 54 minutes. What is the mean commuting time?
5) Below is the standard deviation for extreme 10k finish times for a randomly selected group of women and men. Chose the statement that best summarizes the meaning of the standard deviation. Women: s = 0.17 Men: s = 0.21 A) The distribution of women's finish times is less varied than the distribution of men's finish times. B) The distribution of men's finish times is less varied than the distribution of women's finish times. C)On average, men's finish times will be 0.21 hours faster than the overall average finish time. D)On average, women's finish times will be 0.17 hours less than men's finish times.
Suppose small business profit per week in a city, has been, on average, $35,000 per week over the last few years. A researcher would like to know if the profit is increasing, by taking a random sample of 25 small businesses. Assume the distribution of profit i normal. From the sample, the average weekly profit was $38,600 with a standard deviation of $4,600, Assume the conditions are satisfied and do NOT need to be checked. a) Write the hypotheses to test the researcher's claim. b) Find the calculated test statistic Give the critical value, at a-0.01. d) If testing at a-0.01, give your decision, briefing explaining your reasoning. e) Give the conclusion n Describe a Type Il error in the context of this question. c)
6. a lower value of the standard deviation for a data set indicates that the values of that data set are spread over a relatively smaller range around the mean True False * 7. Simple table is defined as is a tabular method for simultaneously summarizing the data for two categorical variables. True O False
Assuming that the scores of the student in a test is normally distributed with the mean of 40 and standard deviation of 6. a) What are the scores that will include the middle 60% of the class?
Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: Friday the 13th: 10 10 13 11 13 69 11
2. As the size of a sample from a population increases, the standard deviation of the sampling distribution will tend to decrease. True False 3. If the sampling frame used to draw a sample does not include the entire population then
7. Students that are accepted to Harvard University typically have an SAT score of 2100 or higher. In 2012, the average (i.e., mean) SAT score was 1490 with a standard deviation of 240. a) Convert the SAT score typically required to get into Harvard into a z-score. b) If an applicant's z-score for their SAT was 3.5, what would their raw SAT score be? c) IQ scores are standardized scores with an average of 100 and a standard deviation of 15. What IQ score is typically required to get into Harvard (hint: convert Harvard's SAT requirement into an IQ score) a) = b) =
Compute the standard deviation for set {8,8,9,9,9,10,10}.
7. The score on a final examination was normally distributed with mean 72 and the standarddeviation 9. The top 10% of the students are receive ‘A’s. What is the minimum score thata student must get in order to receive an ‘A’?

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23. Calculate the coefficient of concurrent deviation from the following: 60 55 50 56 30 70 40 35 80 80 75 65 40 35 75 63 80 35 20 80 60 60 noo lo borle (B.Com., Osmania Univ., 2012)