A building contractor has a chance to buy an odd lot of 9,000 used bricks at an auction. She is interested in determining the proportion of bricks in the lot that are cracked and therefore unusable for her current project, but she does not have enough time to inspect all9,000 bricks. Instead, she checks 150 bricks to determine which ones are cracked.What is the population of interest?O the rest of the 8,700 bricksO the rest of the 8,850 bricksO all building contractorsO all 9,000 bricks in the lotO the 150 bricks selected for inspectionWhat group constitutes the sample?O all building contractorsO all 9,000 bricks in the lotO the rest of the 8,700 bricksO the 150 bricks selected for inspectionO the rest of the 8,850 bricks

Given: The total bricks are 9000 The number of bricks to be examined is 150.

Answered: What is the population of interest? O…

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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Race organizers want to survey the participating runners on the quality of the running course. Which of the following uses systematic random sampling? Select the first 15 finishers and the last 15 finishers to take the survey. Randomly select 15% of the male participants and 15% of the female participants. Select the 5th finisher (with the number 5 being randomly chosen) to survey, then survey every 15th finisher after that. Sort all of the runners' names alphabetically, then randomly choose 2 letters and survey all participants whose last name begins with one of those letters.
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Instructor-created question The favorite sports of students in a statistics class are shown in the following table. Students' Favorite Sports O None Soccer Hockey Soccer Hockey Soccer 1. Frank 2. Angelica 3. Craig 4. Keith Baseball Нockey Нockey Football 5. Kat 6. Gerardo 7. Jason 8. Marissa 9. Anas 10. Harold 11. Calvin 12. Amy Hockey Baseball a. Suppose technology randomly selects the following values: 6, 2, 9. 4. 3, 5. Use this random sample to find the proportion of students who prefer hockey. LType an integer or a simplified fraction.) If your result is used to describe the sample, is this part of descriptive or inferential statistics? Explain. OA. Descriptive statistics because it uses tables, graphs, or calculations about a sample to draw conclusions about only the sample. O B. Descriptive statistics because it is using information from a sample to draw conclusions about the entire population. O C. Inferential statistics because it uses tables, graphs, or calculations about a…
Superpowers A total of 415 children from the United Kingdom and the United States who completed a survey in a recent year were randomly selected. Each student's country of origin was recorded along with which superpower they would most like to have: the ability to fly, ability to freeze time, invisibility, superstrength, or telepathy (ability to read minds). The data are summarized in the following table. Country U.K. U.S. Fly 54 45 Freeze time 52 44 Invisibility 30 37 Superpower 20 23 Superstrength Telepathy 44 66 a. What proportion of students in the sample are from the United States? b. Find the distribution of superpower preference for the students in the sample using relative frequencies. c. What percent of students in the sample are from the United Kingdom and prefer telepathy as their superpower preference?
A community college employs 8787 full-time faculty members. To gain the faculty's opinions about an upcoming building project, the college president wishes to obtain a simple random sample that will consist of 99 faculty members. He numbers the faculty from 1 to 8787. Complete parts (a) and (b) below. LOADING... Click the icon to view the random number table. Question content area bottom Part 1 (a) Using the provided random number table, the president closes his eyes and drops his ink pen on the table. It points to the digit in row 3, column 6. Using this position as the starting point and proceeding downward, determine the numbers for the 99 faculty members who will be included in the sample. The numbers for the faculty members are enter your response here.
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A community college employs 87full-time faculty members. To gain the faculty's opinions about an upcoming building project, the college president wishes to obtain a simple random sample that will consist of 9 faculty members. He numbers the faculty from 1 to 87. Complete parts (a) and (b) below. Question content area bottom Part 1 (a) Using the provided random number table, the president closes his eyes and drops his ink pen on the table. It points to the digit in row 3, column 6. Using this position as the starting point and proceeding downward, determine the numbers for the 99 faculty members who will be included in the sample. The numbers for the faculty members are 60, 14, 72, 52, 40, 23, 28, 36, 54. (Use a comma to separate answers as needed.) Part 2 (b) The president uses technology to produce the following random numbers. 78 74 59 87 17 74 16 8 4 70 Determine the numbers for 9 faculty members who will be included in the sample. The numbers for the…
C please. Last person didn’t do it. But did all the answers I already did do. Thanks
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-n list on 22 cion 23 -tion 24 stion 25 stion 26 estion 27 estion 28 estion 29 K You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 1.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n=0 (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 37% of air passengers prefer an aisle seat. n= (Round up to the nearest integer.)

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