Examine by contingency table metnoa, wnetner ine nature or area is reiateu w voungpreference. The areas are of two types, urban and rural, and two parties A and B participated in the election.The random sample consists of 33 individuals from rural areas of whom 18 voted in favour of party A and 27individuals from urban areas of whom 12 voted in favour of party A.(Chi-square at 5% for 1 d.f. = 3.84)

Answered: Image /qna-images/answer/e930a403-4883-4ccf-aa45-87ee95578ea3.jpg

Answered: Examine by contingency table metnoa,…

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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Has the law that mandates the use of bicycle helmets failed? The National Cycling Association wants to know the true cyclist proportion and draws a random sample of 1020 cyclists with only 612 wearing helmets. (need the process can be by hand ,Excel or R.)a) Please provide a point estimate of the true percentage of the population of cyclists who wear helmets. b) If the result found in part a of the true proportion of cyclists wearing helmets is proposed as a good estimate, what will be the statistical error of the measurement at 95% confidence? c) Express the result of parts a and b above as a confidence interval. d) If you want a maximum error of no more than 0.02 (2%) with 95% confidence, how large should the sample be? [Answers a) Approximately 60% b) 0.0301 c) 0.5699 ≤ P ≤ 0.6301 d) 2305]
17. Suppose an instructor wants to know the average height, gender distribution, academic performance (bad, good, very good, excellent), and year of admission of the students of the college of the science of SQU. He divided the students into male and female and took a random sample of 30 male and 30 female students. a) What is the implied population in this study? b) Identify the variables of the study c) Classify the identified variables according to qualitative and quantitative
In a random sample for 56 professional actors, it was found that 46 were extrovert.let p represent the proportion of all actors who were extroverts. Find a point estimate for p
A particular part that is used as an injection device is sold in lots of 10. The producer deems a lot acceptable if no more than one defective is in the lot. A sampling plan involves random sampling and testing 3 of the parts out of 10. If none of the 3 is defective, the lot is accepted. Comment on the utility of this plan. Determine the correct parameter.
A service provider company claims that its advertising strategy attracts 40% of young people. A client of that company suspects that it is less. The client will decide no longer to hire the advertising company if, when choosing a random sample of 20 young people, the result is within the lower extreme 5%. When doing the sampling, the client obtained that 8 young people were attracted by the advertising. Will the client rehire the advertising company? fill in the blanks spaces. a)H0: __________ (=,<,>,different) .40 . b)H1: ___________ (=,<,>,different) .40 . c)Find the Xo that corresponds to the extreme 5% according to the problem, in the rejection zone: ___________. .
Q1. Highlight the target population, identify the sampling technique used, and calculate the sample size for the cases listed below. Students may use Krejcie and Morgan (1979) table where required. John worked in a FMCG with 2000 employees. He calculated a sampling fraction of 1/5. Using the employee list available with HR department, he assigned each employee a unique number. John selected first employee at random from the early 5 in that list and continued to select every fifth employee onwards. Talha needed to ensure that the total of 900 staff from all the three departments of a university was represented correctly in his research. His sampling frame…
Suppose that 77% of the students at a small private university carry student loans. For a SRS of students at this university, let P(hat) be the sample proportion of the students who carry student loans. How large would a sample from this population need to be to ensure that the distribution of the sample proportion is normally distributed?
Please answer a,b,c,d based on the given question.

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