w. Brase, x e- C Pandora R D www.webassign netweb/student/Assignment-Responses s

Question

w. Brase, x e- C Pandora R D www.webassign netweb/student/Assignment-Responses submindep 15326305 Suppose you are assigned the number 1. and the other students (a) in your statistics class call out consecutive numbers each Explain how you could get a random sample of four students from your statistics dass Select all that apply) Randomly choose four of the last students that wak Into the dassroom. use a person in the dass has his or her computer or random number table to randomly select four students aher numbers are assigned. Randomly choose four of the first students that walk into the dassroom. Randomly choose four of the talent students in the classroom. Randomly choose four of the students that are stting in the back now. (b) Explain why the first four students walking into the classroom would not necessary form a random sample. (select al that apply) Perhaps they are students that had a dass immedately prior to this one. R Perhaps they are students with lots of free time and nothing else to do. la There is nothing wrong with choosing the first four students walking into the dassroom. a Perhaps they are excellent students who make a special efort to get to dass earty Perhaps they are students that needed less time to get to class. Explain why four students coming in late would not necessarily form a random sample, (Select all that apply.) Perhaps they are students that had a prior dassgo past scheduled time. are students that need more time to get to class. Perhaps they are lazy students that don't want to attend dass Perhaps they are busy students who are never on time to class. Perhaps they u There is nothing wrong with choosing four students coming in late. Explain why four students seting in the back row would not necessarily form a random sample. (Select al that apply.) in the back row do not pay attention in class. R Perhaps students in the back row came to class early. z Perhaps students MacBook Pro

Explanation / Answer

(b)

Since the students are coming to class from all parts of the building, each student does not have an equal chance of being chosen if we use the first four students walking into the classroom.

So, last option is correct.

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(c)

The same explanation as part (b).

Second option is correct.

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(d)

The students in the class may be seated according to the laphabetical order of their names. So, there might be a definite set of students either from the beginning of the alphabet or at the end of alphabates who will come as last row students everytime. If the teacher lets the students chose their own seats, these students may have been the last to enter class or the students less inclined to participate in class. In any situation, these students don't have an equal chance of being chosen in random sample.

So, the second last option is correct.

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e)

The four tallest students may all be the males as the average male height is greater than that of females. Or may be that these four are sportsman or athletes as they are generally taller than the general population.

So, again all the students are not getting the equal chance of being in the sample.

So, first option is correct.

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