A company has the headoffice at US and a branch atU.K. The personnel directorwanted to know if theworkers at the two placeswould like the introductionof a new plan of work and asurvey was conducted forthis purpose. Out of asample of 500 workers atU.K, 62% favoured the newplan. At US, out of a sampleof 400 workers, 41% wereagainst the new plan. Isthere any significantdifference between the twogroups in their attitudetowards the new plan at 5%level?

Assume that p1 and p2 are the true population proportions of workers with attitudes towards the new…

Answered: A company has the head office at US and…

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. A company wants to know the production efficiency of its newly-invented machinery. Which of the following is the most appropriate way to collect the data? A. Experiment B. Observation C. Interview D. Statistical publication 2. Which of the following is an advantage of secondary data? A. Limitations of documents B. Ready to use C. Possible for violating copyright D. Relatively expensive 3. There are 6 multiple choice questions in a test paper. Each question provides 4 answers for students to choose from. How many different possible outcomes can be made? A. 24 B. 720 C. 1296 D. 4096 ITE3706 Foundation Mathematics 11A 2021/22 Sem3_RS Assignment P. 1 4. The percentage increase in the Retail Price Index (RPI) from year 2015 to year 2021 is 8.8% Taking year 2015 as the base period, the RPI of year 2021 is: A. 92 B. 108.8 C. 118.8 D. 128.8
In a survey about people's relationship with their pets, one of the questions asked if the person felt guilty when they left their pets alone when they went on holidays. The response for each person was recorded as "Yes- feels guilty" or "No - does not feel guilty". The researchers were interested to see if men and women felt differently in this situation. Which of the following procedure is the most appropriate one to decide if the feeling of being guilty about leaving pets alone is different for men and women: A) Chi-squared test for independence B) Paired T-test C) Unpaired T-test D) Linear regression
i need in words not handwritten no pic
Is the direction of the difference in the number of anagrams solved between the two groups consistent with theory of helplessness?
12. In a survey, 1015 individuals were classified by gender and whether they favor, oppose, or have no opinion on a complete ban of smoking in public places. Is opinion on banning smoking independent of gender? If the answer is no, explain the nature of the association. Ban smoking in public places Gender Favor No Opinion Орpose 231 Total Male 262 10 503 Female 302 205 5 512 Total 564 436 15 1015
Answer it correctly and explain well. I will rate accordingly.
Prof. Flores, always interested in improving her teaching effectiveness, has decided to undertake a careful analysis of her evaluations from the past three years. A matter of special concern to her is how she is viewed by students of different majors. She's decided to look at the last question on the teacher evaluation form, Question 17, which is, "Would you recommend this professor to another student?" Each of Prof. Flores' students can be placed into one of three categories according to the student's major school, as shown in the contingency table below. (Students who have majors from more than one school are not included.) This table contains a summary of the data that Prof. Flores has collected for 500 of her students. Each of the 500 students is classified according to two variables: major school ("School of Social Science", "School of Engineering", or "School of Physical Sciences") and response to Question 17 ("No", "Maybe", or "Yes"). In the cells of the table are written the…
Suppose you are the manager of two beachfront hotels : The Palms and Golden Sands. You'd like to know if there is a difference in guest satisfaction between the two hotels. To investigate this, you conduct a survey and ask guests upon departure if they are likely to return to the hotel in the future. For The Palms, 163 out of 227 guests who were surveyed responded " yes ". For Golden Sands, 154 out of 262 guests responded "yes ". Answer the following questions. Round any numbers in your final answers to 2 decimals. 1) Calculate a 95 % confidence interval for the difference in satisfaction rates between The Palms and Golden Sands (Show work) 2) Use the critical value approach to test, at a 1% significance level, whether or not the guest satisfaction rates are different between the two hotels. What do you conclude ? (In your answer, show the steps involved with testing) 3) What is the p-value of your test in part 2?
Regarding the context regarding the coronavirus pandemic, see the table below, which refers to 5 groups of people infected with the coronavirus and the number of deaths in each group. a) You, student, by observing the data tabulated in the table above, come to what conclusion about the absolute frequency of the second grade? b) João, a person observing the table, calculates and states that the relative frequency of the fourth class is 48.46% and informs that 48.46% of the number of deaths occurred in the group with the number greater than or equal to 70 and less than or equal to 80 infected. Do you agree with João's calculation and interpretation? If you agree or disagree, provide the calculation and interpretation that justifies your choice. c) Going deeper, Maria, another person who looks at the table, interprets that 16 deaths occurred in the group with a number greater than or equal to 40 and less than 70 infected people. When you see this interpretation that Maria made, do you…
We discuss how to test for an association between two categorical variables in Section 6.8. A marine research team records the number of fish from 3 species that they find at different depth categories in the ocean. They are interested in assessing whether or not there is a relationship between the depth category (close to surface, mid-level, ocean floor) and the fish species found (species A, species B, species C). A two-way table showing the classification of a sample of 150 observations is given below. If the variables for the ocean depth category and the species are independent, how would you calculate the expected number of fish that are at the mid-level and from species C? Expected number =
Cambridge Analytics tracks favorite methods of teen communications worldwide and reports the following: Messaging apps 63.4% In person communications 13.1% Other 16.8% Phone calls 6.7% 1857 teens in NJ were polled to find their favorite ways to communicate. Observed Messaging apps 966 In person communications 390 Other 136 Phone calls 260 Is there evidence that NJ teens are different than the teens worldwide?

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