Mathematics, 07.09.2021 01:00, kkeith121p6ujlt
As part of a statistics project, a teacher brings a bag of marbles containing 800 white marbles and 300 red marbles. She tells the students the bag contains 1100 total marbles, and asks her students to determine how many red marbles are in the bag without counting them. A student randomly draws 200 marbles from the bag. Of the 200 marbles, 56 are red.
i) The data collection method can best be described as.
A) Survey
B) Clinical study
C) Census
D) Controlled study
ii) The target population consists of .
A) The 56 red marbles drawn by the student.
B) The 200 marbles drawn by the student.
C) The 1100 marbles in the bag.
D) The 300 red marbles in the bag.
E) None of the above
iii) The sample consists of .
A) The 200 marbles drawn by the student.
B) The 300 red marbles in the bag.
C) The 1100 marbles in the bag.
D) The 56 red marbles drawn by the student.
E) None of the above.
iv) Based on the sample, the student would estimate that marbles in the bag were red.
Answers: 2
Mathematics, 21.06.2019 20:30, janeou17xn
Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?
Answers: 1
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