An experienced census official feels that she can accurately estimate the number of inhabitants of a city block by simply noting the size of the block and the types ofbuildings (single family homes, apartments, businesses, etc.) that are found on the block. This procedure, if accurate, would be much quicker and cheaper than visitingeach residence and taking a survey of its inhabitants. The data below are estimates of block populations provided by the official for 10 blocks in a large city, and the actualnumbers of inhabitants for the same 10 blocks.Estimate 211 160ActualInhabitants of City Blocks14597 165 14590 180 210 220 125 200 11095 180 200 225 130 210 60Copy DataStep 1 of 2: Find the value of the test statistic for testing whether there is a linear relationship between the actual number of inhabitants and the estimated number.Round your answer to two decimal places, if necessary.

The total number of observations is n = 10. Assume that x defines the estimated number of…

Answered: An experienced census official feels…

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 surgeon would like to know how long it takes, on average, to complete a coronary artery bypass surgery. She samples 27 surgeries and logs the time it takes to complete each one, in hours: 6.3, 3.4, 3.6, 5, 3.5, 4.5, 6.2, 5, 4.3, 2.8, 4.2, 4.7, 5.3, 4, 6.3, 3.5, 5.1, 4.5, 2.8, 2.6, 5.4, 2.8, 6.1,6.1, 4.1, 5.7, 4.4 Assuming the population standard deviation is o = 1.1, construct a 95% confidence interval for the average time it takes to complete a coronary artery bypass surgery. Margin of Error: E = We are 95% confident that the mean amount of time it takes to complete a coronary bypass sugery is between hours and hours.
The wedding date for a couple is quickly approaching, and the wedding planner must provide the caterer an estimate of how many people will attend the reception so that the appropriate quantity of food is prepared for the buffet. The following table contains information on the number of RSVP guests for the 145 invitations. Unfortunately, the number of guests does not always correspond to the number of RSVPed guests. Based on her experience, the wedding planner knows it is extremely rare for guests to attend a wedding if they notified that they will not be attending. Therefore, the wedding planner will assume that no one from these 50 invitations will attend. The wedding planner estimates that the each of the 25 guests planning to come solo has a 74% chance of attending alone, a 20% chance of not attending, and a 6% chance of bringing a companion. For each of the 60 RSVPs who plan to bring a companion, there is a 90% chance that they will attend with a companion, a 4% chance of attending…
identify a column in the table with data at a ratio level
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if a small bug=12mm long and big bug=16mm long based on scaling. how much stranger would a big bug be compared to small bug 1. 0.56 2.0.75 3.2.4 4.0.42 5.1.5 6.0.65 7.1.3 8. 1.8
A 2017 USA Today article reports that NCAA football coaches’ salaries have continued to increase in recent years (USA Today). The annual base salaries for the previous head football coach and the new head football coach at 23 schools are given in the file Coaches a. Determine the median annual salary for a previous head football coach and a new head football coach. Previous Coach Median New Coach Median b. Compute the range for salaries for both previous and new head football coaches. Previous Coach New Coach c. Compute the standard deviation for salaries for both previous and new head football coaches. Round your answers to the nearest whole number. Previous Coach New Coach
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A statistics instructor asks each student in his classes to report how much the student spent on textbooks for the semester. The figures reported by students are shown below. 725 735 555 420 385 480 505 270 405 285 585 450 515 560 500 395 545 595 365 455 505 345 555 485 560 475 520 455 355 590 550 495 505 505 495 465 370 355 480 385 515 605 480 410 485 560 475 350 465 435 455 380 320 535 565 520 510 495 485 650 490 295 555 540 565 490 570 380 610 600 390 375 390 335 525 445 540 490 485 555 440 560 405 590 520 470 560 510 340 385 585 635 415 455 590 385 505 510 545 405 470 560 495 515 495 595 565 615 470 680 465 470 310 470 505 465 375 360 650 460 560 500 375 500 370 415 490 440 470 525 535 640 385 475 425 595 505 365 485 495 390 380 585 690
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The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 1 of 2: Suppose a sample of 782 suspected criminals is drawn. Of these people, 548 were not captured. Using the data, estimate the proportion of people who were caught after being on the 10 Most Wanted list. Enter your answer as a fraction or a decimal number rounded to three decimal places.
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A surgeon would like to know how long it takes, on average, to complete a coronary artery bypass surgery. She samples 26 surgeries and logs the time it takes to complete each one, in hours: 5.2, 4.9, 3.9, 3.6, 5.6, 5, 4.5, 7, 4.5, 5.4, 5.1, 5.4, 5.2, 5.2, 4.1, 6.5, 6.7, 5.9, 5.4, 5.4, 5.8, 4.3, 4.7, 3.7, 5.4, 3.9 Assuming the population standard deviation is o the average time it takes to complete a coronary artery bypass surgery. 0.84, construct a 87% confidence interval for Margin of Error: E = We are 87% confident that the mean amount of time it takes to complete a coronary bypass sugery hours. hours and is between Question Help: D Post to forum

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