tell-whether-the-sampling-strategy-will-result-in-a-random-sample-from-the-population-under-consid-4

Question

Tell whether the sampling strategy will result in a random sample from the population under consideration. If it is not random, explain why it is not.

When 50 qualified students audition for the five chorus roles in the school musical, the director decides to choose the five chorus members randomly. He tells them to form five lines of ten people; then he announces that the seventh person in each line will be in the chorus.

Matt Bremer · Accepted Answer

Okay. Problem. 10 50. Qualified students are additionally for five chorus rules in the school musical. And so the director needs to pick five people since they&#x27;re all qualified. Um, the fair way to do it, I guess, would be a random selection of five people from the 50 with the, uh, director does is to ask the 50 people that lineup in five lines, each with 10 people in that or, um, each of them with 10 people in the line and says, Okay, we&#x27;re gonna select a seven person in the July to be part of the courts. Now, is this a random selection? And I would say this is pretty, uh, pretty Random people could have gone in any order they wanted to in the line. Um, the fact that seven was picked, you know, they probably better get random number. Pick a number between one. And 10 uh, to pick the line with probably an improvement over this. Um, again, though there&#x27;s also the issue with, you know, who are the people who usually come and get the front of the line. Are they different from the people who are in the back of the line? and are truly getting a random sample If people who rushed to the beginning are a little bit more go getters than the people who just kind of tag along a minute. The end. Oh, but it&#x27;s right. Qualify, uh, since is pretty good random, random job selecting.

Matt Bremer · Answer

all right, so a talk show hosts wants to give away five free cars. You want a car? Human car, human car and the way she&#x27;s gonna pick the people is asked the ushers to choose five random seats and put a little ticket under those random seats throughout. And then the question is, Is this a random selection? Does everyone have an equal chance of getting their 53 cars? Um, well, I would say, Um, while this isn&#x27;t a bad one, wish to do it properly. Better to take the five random seats and maybe a number of the seats from one through whatever the seats are. Whatever. And then randomly select what seats in that group are going to get the tickets because you never know if the ushers you see it. It&#x27;s random, he says. She instruction of pick five random seats of their choice. So you know who knows whether or not they all go to the first seed in each, each one and and so you get the five people along the robe. It&#x27;s, you know, for whatever reason, using a random number generator is just We&#x27;ll save a way to make sure that there&#x27;s not some sort of bias and what kind of seats they did. You know where they are? They take five sit along and ill or something like that. It&#x27;s this, uh this is subject to some biased anyone. How well the ushers, So

Matt Bremer · Answer

All right, so I questioned eight. Uh, Professor is trying to get a sample of 50 students for a student service survey. And we does. He uses a calculator or a computer and uses the random interred your function and where they get five random numbers. Um, professor then goes to those five ages of the student directory and selects 10 from each age. Question is, is this a random sample? And if it&#x27;s not, why is what? Well, I think the professor starts out really good with this part. Raised the random number generator in order to get the five random numbers. So I do believe that these five ages it are random. In that respect, the problem here is how do you pick the 10 people from each age UK that is subject to bias? Might be that looking for a certain type of main sub. Subconsciously, you&#x27;re looking for, um, subconsciously picking Maur a male students than female students. Or or whatever, you know. So, um, I would say that the first part of this give random the second part. Not so good

Sherrie Fenner · Answer

So in number nine, he&#x27;s using a phone book. So the first problem with that is not everybody&#x27;s in the phone book. Second, he&#x27;s stopping at 50. And if he&#x27;s starting, no matter where he started, Um, that alphabetical, like we started a is he&#x27;s probably only going to get to the seas so most most of his sample will be clustered around that part of the alphabet, probably a maybe B and C so not every.

Sherrie Fenner · Answer

So in this problem, they&#x27;re holding tryouts. And I think this is number 11. They&#x27;re holding tryouts. Tryouts are not a random sample. They&#x27;re looking for the best players, Not a random sample. So this is not a random sample. They&#x27;re looking for their best players, and they&#x27;re holding tryouts.

Sherrie Fenner · Answer

in question seven. All the employees haven&#x27;t equal lightning chance of being selected, So it is a random sample. I mean, uh, writing Rampal Rin? Um uh, sample. And it will suffice.

Problem

Tell whether the sampling strategy will result in…

Problem 10 Easy Difficulty

Answer

Hence, the sampling technique will result into a random sample if and only if the students do not know about the technique.

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Franklin D. Demana,Bert K. Waits,Gregory D. Foley,Daniel Kennedy

Precalculus: Graphical, Numerical, Algebraic

Grace H.

Catherine R.

Alayna H.

Caleb E.

Absolute Value - Example 1

Absolute Value - Example 2

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Hence, the sampling technique will result into a random sample if and only if the students do not know about the technique.

Precalculus: Graphical, Numerical, Algebraic

Grace H.

Catherine R.

Alayna H.

Caleb E.

Absolute Value - Example 1

Absolute Value - Example 2

Franklin D. Demana,Bert K. Waits,Gregory D. Foley,Daniel KennedyPrecalculus: Graphical, Numerical, Algebraic

Grace H.

Catherine R.

Alayna H.

Caleb E.

Franklin D. Demana,Bert K. Waits,Gregory D. Foley,Daniel Kennedy

Precalculus: Graphical, Numerical, Algebraic