An elementary school teacher is interested in assessing how students' performance varies with the month ofthe year in which they were born. In a sample of 500 grade 4 students, the birth months were distributed asfollows.Birth MonthJanuaryFebruaryNumber of Students3124March40April45May50June44|JulyAugustSeptember354353October41NovemberDecember4945Which sampling method will ensure that the teacher has students born in each month in the sample?a. simple random samplingb. cluster random samplingc. systematic sampling where every 25th child is selected after the children are ordered bybirthdated. stratified random sampling

The sampling is the process that used to take sample from the population. The sampling is broadly…

Answered: An elementary school teacher is…

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 coach is interested in how many slam dunks the average college freshman at his university can do. Ten volunteers from the senior class step forward. After observing their performance, the coach concluded that college seniors can do an average of 10 slam dunks in a row without missing. what is the sample? what is the population?
Are birthdays "evenly distributed" throughout the year, or are they more common during some parts of the year than others? Owners of a children's toy store chain in the Northwest asked just this question. Some data collected by the chain are summarized in the table below. The data were obtained from a random sample of 190 people. The birthdate of each person was recorded, and each of these dates was placed into one of four categories: winter (December 21-March 20), spring (March 21-June 20), summer (June 21-September 20), and fall (September 21-December 20). The numbers in the first row of the table are the frequencies observed in the sample for these season categories. The numbers in the second row are the expected frequencies under the assumption that birthdays are equally likely during each season of the year. The bottom row of numbers gives the following value for each of the season categories. Answer the following to summarize the test of the hypothesis that birthdays are equally…
You want to get a probability-based sample to gauge freshmen opinion about the food served on campus. Give three different probability-based sampling strategies (simple random, systemic, and stratified). How would you design your data collection strategy for each of three methods? What type of sampling frame might you need for this work?
Are birthdays "evenly distributed" throughout the year, or are they more common during some parts of the year than others? Owners of a children's toy store chain asked this question. Some data collected by the chain are summarized in the table below. The data were obtained from a random sample of 180 people. The birthdate of each person was recorded, and each of these dates was placed into one of four categories: winter (December 21-March 20), spring (March 21-June 20), summer (June 21-September 20), and fall (September 21-December 20). The numbers in the first row of the table are the frequencies observed in the sample for these season categories. The numbers in the second row are the expected frequencies under the assumption that birthdays are equally likely during each season of the year. The bottom row of numbers gives the following value for each of the season categories. (Each expert I have asked has gotten the critical value wrong so I added a picture of the correct formula to…
Below are the jersey numbers of 11 players randomly selected from a football team. Find the range, variance, and standard deviation for the given sample data. What do the results tell us? 35 47 5 97 25 86 65 66 38 85 55 Range (Round to one decimal place as needed.)
To conduct a door-to-door survey about crime victimization, a city official randomly selects 5 city blocks and surveys all the residents of these 5 city blocks. What type of sample is this?A. Simple Random SampleB. Systematic Random SampleC. Cluster SampleD. Multistage SampleE. Stratified Random Sample
the grade-point averages of 20 college seniors selected at random from a graduating class are as follows:3.2, 1.9, 2.7, 2.4, 2.8, 2.9, 3.8, 3.0, 2.5, 3.3, 1.8, 2.5, 3.7, 2.8, 2.0, 3.2, 2.3, 2.1, 2.5, 1.9. calculate the standard deviation.
The following are the number of cars passing a point on a highway per minute. 10 12 11 19 21 21 23 22 24 25 23 21 28 26 62 Is there any outlier in the data above? Which data? Show step by step to find 7 samples from the data above using simple random sampling method. List down all the sample data you obtained from (h).
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 31 29 34 28 34 26 28 Actor (years) 59 40 39 40 30 32 54 a. Use the sample data with a 0.05 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). In this example, is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. What are the null and alternative hypotheses for the hypothesis test? Ho: Ho Md 42 27 33 40 41 43 year(s) year(s) H₁ H (Type integers or decimals. Do not round.) Identify the…
Identify the sampling techniques used in each scenario. e. surveying movie-goers as they exited the late movie, researchers determined that only young adults under the age of 22 see movies in the theater anymore.
Which one of the sampling methods listed in the response options is used in the scenario below? A university researcher is interested in studying newly admitted community college transfer students. She begins by dividing the students into two subpopulations: US citizens and international students. The researcher then randomly samples from each separate subpopulation to ensure that the final combined sample represents the same percentage of US citizens and international students seen in the general community college transfer population. A. Cluster B. Convenience C. Stratified D. Systematic
If groups of participants are selected to represent sub-groups in the population (e.g. such as selecting an entire class of Social Work students to be compared to a group of Sociology students), this is known as Select one: O a. Cluster sampling. O b. Haphazard sampling. O c. Simple random sampling. O d. Opportunity sampling. If a distribution is negatively skewed, in what order (from lowest to highest) will the averages be? Select one: O a. mean, median, mode O b. mode, median, mean O c. median, mode, mean O d. mean, mode, median

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