A question and two statemen's labelled (I) and(II) containing some data are giver as follows:How many of the 50 members of a club couldspeak neither Hindi nor English?(1) Out of 50 members, exactly 50 per centcould speak Hindi and exactly 20 per centcould speak Engiish.(II) Of the 50 members, exactly 10 per cent couldspeak both Hindi and English.Which one among the foiiowing is correct withrespect to above?(a) Statement (II) alone is sufficient butstatement (I) alone is not sufficient to answerthe question asked.(b) Statement (I) and (II) together are notsufficient to answer the question andadditional data required.(c) Statement (I) alone is sufficient to answerthe question but statement (II) alone is notsufficient.(d) Both statement (I) and (II) together aresufficient to answer the question but neitherstatement alone is sufficient.

Answered: Image /qna-images/answer/c07e1d83-21fe-4e22-83ba-f5645f7a12ab.jpg

Answered: A question and two statemen's labelled…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Each respondent was given a score, from 1 to 15, on his or her knowledge of the COFLU-20. A score from 1 to 7 was considered to indicate 'poor' knowledge, 8 to 11 indicated 'satisfactory' knowledge and 12 to 15 indicated good knowledge. Table 2 below shows the knowledge level of respondents, by age group. Table 2 Age Group Knowledge Level Total Poor Satisfactory Good 18 - 25 33 16 13 62 26 - 34 30 18 12 60 35 - 44 29 14 12 55 45 - 54 36 16 18 70 55 - 75 Total 17 14 22 53 145 78 77 300 (c) Using Table 2, assist the researcher to calculate the probability that a randomly selected respondent: ) is below 35 years of age and has good knowledge of the COFLU-20 [2 marks] (ii) is below 35 years of age or has good knowledge of the COFLU-20 [3 marks]
4. Students in Miss Bigelow's English class completed a vocabulary test worth 100 points, and, interestingly, all students received different scores on this test. When Miss Bigelow summarized the test scores, she obtained the following: Minimum = 25 points, Q, = 59 points, Median = 78 points, Q3 = 87 points, and Maximum = 100 points. If Kami's score on this test is at the 40th percentile, what does this mean? A. Kami's test score is between 25 points and 59 points. B. Kami's test score is between 59 points and 78 points. C. Kami's test score is between 78 points and 87 points. D. Kami's test score is between 87 points and 100 points. E. Kami had a higher test score than 60% of her classmates.
b) Persons who visit the restroom of a certain fast-food outlet were asked to state their opinion of the quality of the restroom facilities, The following tables show the responses from a sample of 100 persons. Quality of Facilities Above Average Average Below Average Totals iv) Gender of Respondent Male 8 26 7 41 Female 7 24 28 59 Totals 15 50 35 100 A x² test is carried out to determine whether there is an association between the gender of persons and their opinion. i) State appropriate null and alternative hypotheses ii) Determine the critical region of the test at the 1% level of significance Calculate the value of your test Statistic iii) What is your conclusion for this test. Give a reason for your answer
anna wants to investigate whether there is a relation between the hair- and eye-color of the residents of san pablo. He recorded the hair- and eye-color of 84 residents in san pablo, the results are shown in table 1. Next to it table 2 is shown and a large part of table 3 is shown below, but one value is missing. anna wants to conduct a chi-squared test for contingency tables in order to test his theory. Which of the following claims is correct? Please explain Brown Blue Gray Green Brown Blue Gray Green Black 3 1 Black 5.54 5.36 2.50 1.61 Brown 17 8 4 Brownt 14.02 13.57 6.33 4.07 Red 4 2 Red 3.69 3.57 1.67 1.07 Blonde 1 16 Blonde 7.75 7.50 3.50 2.25 Tafla 1: Observed frequency Tafla 2: Expected frequency Brown Blue Gray Green Black 2.17 1.04 0.10 0.23 Brownt 0.6 0.44 0.00 Red 0.03 0.69 0.07 0.80 Blonde 9.63 0.64 0.03 Tafla 3: Contribution to test statistic 1. anna rejects the null hypothesis and claims that there is a relationship between hair- and eye color of the residents of san…
b). Give some examples (at least three) where the Basic Comparison test fails. Also, investigate the conver-gence of your provided examples by employing some appropriate techniques.
Question 28. Can there be a set of data fitting to both the following histograms? Which of these answers are correct? Histogram 1 Histogram 2 10 20 30 40 50 a) No, because the right one is calculated from positive data only. b) Yes, the right one includes all possible data from which the left one may be calculated. c) No, the right one must be calculated with at least one value greater than 8. d) No, the left one can not have been calculated with a value of 10 or more. Density 0.10 0.15 000 Density 000
8) The following results are from data that were collected from the various high schools around the county. The dependent variable is % OF STUDENTS GOING TO COLLEGE, and the independent variables are: AVERAGE CLASS SIZE, COMBINED SAT SCORES, SPENDING PER STUDENT, AVERAGE TEACHER SALARY, AND % TAKING THE SAT Since the 3 variables AVERAGE CLASS SIZE, SPENDING PER STUDENT, AND AVERAGE TEACHER SALARY are each not significant at the 10% level of significance individually, in order to test to see if as a group they are significant the 3 variables are excluded and another regression is run. The results are as follows: a) At the 10% level of significance, test whether as a group AVERAGE CLASS SIZE, SPENDING PER STUDENT, AND AVERAGE TEACHER SALARY are significant. Be sure to state the null and alternative hypotheses for this hypothesis test.
Prof. Pham
Which of the following statements is true of Group 1’s mean FIQ score? Group of answer choices: 1. Group 1’s mean FIQ score is not significantly different from Group 2’s mean FIQ score 2. Group 1’s mean FIQ score is significantly different from Group 2’s mean FIQ score 3. Group 1’s mean FIQ score is significantly higher than Group 2’s mean FIQ score 4. Group 1’s mean FIQ score is significantly lower than Group 2’s mean FIQ score 5. None of the above
Mr. A wants to analyze the CGPA of bachelor's students for the years 2011, 2012, 2013, Is she conducting a cross sectional study? True O False

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