III. Identification. Tell whether the statement is a simple random, sytematic, stratified or cluster sampling. _1. A researcher interviewed people from each town in the province of Albay for his researchon population._2. A researcher interviewed all top Grade 11 students in each of 15 randomly selectedprivate school s in Metro Manila._3. In a recent research that was conducted in a private school, the subjects of study wereselected by using the Table of Random Numbers.4. A researcher is doing a research work on the students' reaction to the newly implementedcurriculum in mathematics and interviewed every 10th student entering the gate of aschool.5. A researcher randomly selected 10 barangays in a town for her study. She did this bywriting names of each barangays on a piece of paper which then folded and put in a bowlthen she draw 10 pieces of paper from the bowl.

According to the guidelines, we are only allowed to solve the first three subparts. Please post…

Answered: _1. A researcher interviewed people…

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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A lecturer has determined from her past experience that at the end of the semester, 70% of her students would have no absenteeism, 20% of her students would have 1-day absenteeism and 10% would have 2-day absenteeism. However, at the end of this semester, lecturer checked a random sample of 200 students; finding 100 to have no absenteeism, 40 to have 1-day absenteeism and 60 to have 2-day absenteeism. Following these observed numbers, what are the expected numbers for no absenteesim, 1-day and 2-day absenteesims?
It is believed that 11% of all Americans are left-handed. A college needs to know the number of left-handed desks to place in the large instructional lecture halls being constructed on its campus. In a random sample of 350 students from that college, whether or not a student was left-handed is recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a higher percentage of left-handers than the general American population. State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem. The symbol for the random variable involved in this problem is The wording for the random variable in context is as follows: The symbol for the parameter involved in this problem is The wording for the parameter in context is as follows: Fill in the correct null and alternative hypotheses.�0: ��:…
It is believed that 11% of all Americans are left-handed. A college needs to know the number of left-handed desks to place in the large instructional lecture halls being constructed on its campus. In a random sample of 350 students from that college, whether or not a student was left-handed is recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left-handers than the general American population. State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem. The symbol for the random variable involved in this problem is The wording for the random variable in context is as follows: The symbol for the parameter involved in this problem is
It is believed that 11% of all Americans are left-handed. A college needs to know the number of left-handed desks to place in the large instructional lecture halls being constructed on its campus. In a random sample of 350 students from that college, whether or not a student was left-handed is recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left-handers than the general American population. State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem. The wording for the parameter in context is as follows: Fill in the correct null and alternative hypotheses.H0:H0: HA:HA: A Type I error in the context of this problem would be A Type II error in the context of this problem would be
Suppose we are asked to construct a list of treatment assignments for patients entering a study comparing different treatments for duodenal ulcers. Anticipating that 20 patients will be entered in the study and two treatments will be used, construct a list of random-treatment assignments starting in the 28th row of the random-number table.
Different kinds of companies cmpensate their key employees in different ways. Established companies may pay higher salaries, while new companies may offer stock options that will be valuable if the company succeeds. Do high-tech companies tend to offer stock options more often than other companies? One study looked at a random sample of 200 companies. Of these, 85 were listed in the Directory of Public High Technology Corporations and 115 were not listed. Treat these two groups as SRS's of high-tech and non-high-tech companies. 72 of the high-tech companies and 68 of the non-high-tech companies offered incentive stock options to key employees. A) Is there evidence that a higher proportion of high-tech companies offer stock options? (use a=.05) z =_______________ P-value +_________________ Conclusion: a or b a) There is significant evidence that a higher proportion of high-tech companies offer stock options. b) There is no evidence that a higher proportion of high-tech companies offer…
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The U.S. Census Bureau reported that in 2015,the proportion of adult Americans age 25 and olderwho have a bachelor’s degree or higher is 0.325(“Educational Attainment in the United States:2015,” census.gov, retrieved January 22, 2017).Consider the population of all adult Americans age25 and over in 2015 and define 户to the proportionof people in a random sample from this populationwho have a bachelor’s degree or higher.a. Would 卢based on a random sample of only 10people from this population have approximatelya normal distribution? Explain why or why not.b. What 征e the mean value and standard deviation of户based on a random sample of size 400?c. Suppose that the sample size is n = 200 ratherthan n = 400. Does the change in sample sizeaffect the mean and standard deviation of thesampling distribution of 卢？ If so, what are thenew values for the mean and standard deviation?If not, explain why not.

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