13.The following table gives the marks obtained by a batch ofcandidates in a certain examination in History and Politics. In which subjectis the level of knowledge of the càndidates higher ? Give reasons.Roll No.HistoryPoliticsRoll No.HistoryPolitics142469.403022420106261.38411155504354312546330251352456.45541447567584715435850363.

Answered: Image /qna-images/answer/dbf416aa-6654-490c-abbb-94a463532d08.jpg

Answered: 13. The following table gives the marks…

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) Below find the records of 12 randomly selected used pickup trucks (none used commercially) and 11 randomly selected used passenger cars, the time (in years) that they were kept by the original owner before being sold: Used pickup trucks | 3 | 2.5 2.9 5 4.2 3.1 3.3 4 5.3 3.8 4.5 Used passenger cars | 2.2 3 2.8 4.3 4 3.3 2.9 2.1 2 3.1 3 It is known that the standard deviation of used pickup trucks is 2 years and of used passenger cars is 1 year. (a) Investigate, at the 5% significant level, whether the mean time (in years) that used pickup trucks were kept by the original owner before sold is larger than used passenger cars. (b) What assumption is needed to perform the test in (a). (c) Construct the 96% confidence interval for the mean difference of time (in years) were kept by the original owner before sold between used passenger cars and used pickup trucks. Use this confidence interval to tell whether there is difference in the mean time (in years) between these 2 tynes of…
Number of ChildrenTable 1 shows the number of women (per 1000) between 15 and 50 years of age who have been married grouped by the number of children they have had. Table 2 gives the same information for women who have never been married.1 Number of Children Women per 1000 0 162 1 213 2 344 3 182 4 69 5+ 32 Table 1 Women who have been married Number of Children Women per 1000 0 752 1 117 2 72 3 35 4 15 5+ 10 Table 2 Women who have never been married 1http://www.census.gov/hhes/fertility/data/cps/2014.html, Table 1, June 2014. Condition gt requires numbers instead of "null" and "0" (a) Without doing any calculations, which of the two samples appears to have the highest mean number of children? Women who have been marriedWomen who have never been married Which of the distributions appears to have the mean most different from the median? Women who have been marriedWomen who have never been married…
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A certain stimulus administered to each of the 12 patients resulted in the following increase of blood pressure:5, 2, 8, -1, 3, 0, -2, 1, 5, 0, 4 and 6Can it be concluded that the stimulus will, in general, be accompanied by an increase in blood pressure?
Which of the following is most likely a population as opposed to a sample? A Every third person to arrive in the hospital B Registered nurses in 2007 © Respondents to a newspaper survey D First five nurses completing their duties
9. A student researcher is assigned the task of finding out if the level of education attained by a person depended on the income class to which he/she belonged. He interviews 60 persons. The results are recorded on the table below. Level of Income Bracket Education A в Attained High School 15 Graduate College Graduate With MA/PhD Degrees 2 10 3 4 5. The student applies a test of independence at 5% level. What is his conclusion?
Male Female27,329 22,49814,596 24,5893,890 5,06827,315 16,72525,067 10,3808,480 16,57219,490 10,75516,334 19,12228,183 11,82721,356 18,61212,674 15,73210,066 11,42311,288 17,79220,679 24,76719,722 6,359369 19,57118,284 21,81211,653 19,68618,981 18,29415,412 13,48515,839 31,24320,391 9,4316,069 16,1216,072 4,22624,527 12,6649,492 20,22511,618 14,59813,916 22,04613,081 20,08517,460 11,13913,491 35,7097,630 8,54121,263 9,82216,455 12,38511,590 28,05515,409 19,22816,827 16,21710,596 17,72618,005 20,00612,428 16,58313,727 19,8574,706 14,49917,168 17,97412,641 17,22015,661 28,75616,855 38,40718,490 25,78537,993 33,38319,196 25,06447,688 30,26225,062 18,14310,357 7,59515,653 23,8969,962 16,4425,377 16,53619,537 26,129
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Es A census of all the 12,475 current students at the local community college showed that 56.5% want to transfer to a university, their average age is 21.7 years, and 60 of them are pursuing degrees in mathematics. In order to attract more students, the math department organized an "Opportunities in Mathematics" fair for current students of the college. A total of 267 students from those who attended responded to a poll. The poll showed that 83% of those who answered want to transfer to a university, the average poll respondent was 22.3 years old, and 77 them were interested in pursuing a degree in mathematics. (a) For the math fair poll, identify the population and the sample. Population: (Choose one) Sample: (Choose one) (b) Choose whether each number described below is a parameter or a statistic for the math fair poll. Number Parameter Statistic The 60 students pursuing a math degree among all the current students at the community college The 56.5% of all current students at the…
7) Students in a class were divided in two batches of 10. One batch was given a quiz in the morning before their lectures and the same quiz was given to the other batch in the afternoon after their lectures. The quiz scores out of 10 are given below. Morning Batch Afternoon Batch Scores Scores 658.5 7 9 55 2.5 | 10| 10| 4.5 |5.5 9.5 6.5 10 8.5 7 8 Use the run test to determine whether the time of the quiz has an effect on the scores. 3
B) Are males or females do a better job of detecting cheating? Justify your answer using conditions needed to justify your answer .

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