urgent help please HigherSAT HeightWeightYearGenderAwardSiblings Birthorder VerbalSAT MathSATSATGPAPiercingsSophomore MSophomore MSophomore FSophomore FNobelVerbal7117563062012503.05Olympic Math70183324705009702.204NobelVerbal651402355054010903.304NobelVerbal671401169066013503.456 group each variable ascategorical nominal/ ordinalnumerical discrete/continuous

Introduction: The variables considered in the study are year, gender, award, higher SAT, height,…

Answered: group each variable as categorical…

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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NORTH–SOUTH AIRLINE CASENorthern Airline DataAirframe CostEngine CostAverage AgeYearper Aircraftper Aircraft(Hours)200151.8043.496,512200254.9238.588,404200369.7051.4811,077200468.9058.7211,717200563.7245.4713,2752006 84.7350.2615,215200778.7479.6018,390Southeast Airline DataAirframe CostEngine CostAverage AgeYearPer Aircraftper Aircraft(Hours)200113.2918.865,107200225.1531.558,145200332.1840.437,360200431.7822.105,773200525.3419.697,150200632.7832.589,364200735.5638.078,2591. Develop Regression equations for each cost category as dependent variables and average age as independent variables. Do this for each Airline. Look at graphs produced by QM2. From the regression results, what would you conclude about a) airframe vs engine costs for each airlineb) comparing airlines as to airframe costsc) comparing airlines as to engine costsd) Provide a brief summary report of your comparisons
. A research center claims that at least 23% of adults in a certain country think that their taxes will be audited. In a random sample of 900 adults in that country in a recent year, 19% say they are concerned that their taxes will be audited. At α=0.01, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H0 and Ha.
The iHub features an array of 3D printers for student use. 3D printers use plastic filament spools to print out plastic parts. The iHub purchases 85% of their filament spools from Amazon, and the rest of their filament spools from Flash Forge. It has been determined that 9% of the filament spools from Amazon are defective, while only 3% of the filament spools from Flash Forge are defective. i) The iHub randomly selects one filament spool from its inventory. What is the probability of it being a defective filament spool? (three decimals) ii) If a filament spool at the iHub is randomly selected and determined to be defective, what is the probability that the filament spool was purchased from Amazon? (three decimals)
city pop avginc pctstu rent 1 77759 19568 23.17031 342 2 141865 31885 20.98403 496 3 42099 21202 24.383 351 4 46209 29044 39.32784 588 5 110330 56307 16.5005 925 6 132605 35103 11.45658 630 7 83312 29407 29.77842 521 8 87758 26826 24.35903 422 9 130474 25811 14.57149 568 10 84770 21077 30.70308 383 11 124773 23453 27.23346 444 12 45734 14286 40.2239 347 13 63502 22967 33.18006 422 14 73233 22346 20.32827 636 15 60633 18393 49.28999 403 16 71305 19353 22.15693 325 17 47198 24636 45.79643 404 18 59738 24565 39.35184 414 19 65608 22900 34.30679 415 20 37712 21531 32.41143 396 21 40641 20043 17.43559 332 22 219531 21898 13.36167 354 23 95802 33140 25.43162 538 24 50677 24719 63.23184 451 25 80277 23207 22.8596 403 26 109592 33344 32.91664 568 27 48812 24004 24.35672 399 28 41882 21174 20.77981 304 29 69101 22059 32.07768 382 30 191972 28056 15.42725 379 31 62126 23648 14.48991 366 32 29541 25152 55.38404 493 33 101082 17738…
city pop avginc pctstu rent 1 77759 19568 23.17031 342 2 141865 31885 20.98403 496 3 42099 21202 24.383 351 4 46209 29044 39.32784 588 5 110330 56307 16.5005 925 6 132605 35103 11.45658 630 7 83312 29407 29.77842 521 8 87758 26826 24.35903 422 9 130474 25811 14.57149 568 10 84770 21077 30.70308 383 11 124773 23453 27.23346 444 12 45734 14286 40.2239 347 13 63502 22967 33.18006 422 14 73233 22346 20.32827 636 15 60633 18393 49.28999 403 16 71305 19353 22.15693 325 17 47198 24636 45.79643 404 18 59738 24565 39.35184 414 19 65608 22900 34.30679 415 20 37712 21531 32.41143 396 21 40641 20043 17.43559 332 22 219531 21898 13.36167 354 23 95802 33140 25.43162 538 24 50677 24719 63.23184 451 25 80277 23207 22.8596 403 26 109592 33344 32.91664 568 27 48812 24004 24.35672 399 28 41882 21174 20.77981 304 29 69101 22059 32.07768 382 30 191972 28056 15.42725 379 31 62126 23648 14.48991 366 32 29541 25152 55.38404 493 33 101082 17738…
Player Salary PC TD Age1 25.5566 65.2 28 272 22.0441 60.5 27 263 20.5000 62.3 27 284 19.0047 66.1 26 385 17.0000 67.9 29 286 15.0052 55 16 277 14.0057 68.8 33 338 12.9895 70.6 34 309 12.5073 60.3 22 3310 12.0000 68.4 33 4011 11.2554 48.8 3 2412 9.5000 60.5 21 2913 8.6018 63.1 21 2414 8.6000 64.7 30 2615 8.5000 60.9 15 3116 8.0073 65.7 28 3217 7.9073 58.3 22 2418 7.7516 66.6 26 2719 6.5073 56.7 5 3220 6.3250 55.5 8 3421 6.2562 60 17 3422 4.0073 60.5 18 2523 3.1000 53.3 13 2124 2.9956 55.9 9 2725 2.8648 64.5 20 2726 2.5450 53.8 12 2327 2.1673 58.7 10 2628 2.0079 53.1 8 2529 1.3800 54.5 10 2130 1.0950 62.1 21 2731 0.9503…
Assume that population of the first semester students in a college with below heights (in centimeters). 147.4 150.4 154.7 155.5 156.3 158.1 159.3 160.6 162.1 163.5 147.9 152.9 154.9 155.7 156.6 158.3 159.6 161.0 162.2 165.5 149.0 153.6 155.1 156.0 156.6 158.5 159.6 161.4 162.6 165.5 149.9 153.7 155.4 156.0 156.7 158.5 159.9 161.9 162.7 170.3 A Do we need the sample to be drawn from a population of normal or approximately normal in this Question? Explain by using the central limit theorem. B Draw a box-whisker plot on a graph paper showing lower and upper boundaries and identify the outliers if any. Describe the shape of the sampling distribution based on the box-whisker plot.
An alloy manufacturer is investigating if they can improve the strength of one of their alloysby producing it at a lower temperature. To investigate that, they produce the alloy at twodifferent temperatures (high and low) and then measure the breaking strength of randomsamples of specimens from each. The following table represents the strength of the randomsamples at the higher and lower temperature, in units of 0.001-inch deflection. Temp. Strength (0.001 inch)High 87 64 66 85 76 49 97 73 75 77 69 68 89 27 58 84Low 88 82 81 85 79 80 88 78 77 85 79 76 Do the results support the hypothesis that lowering the production temperature can improve thestrength of the alloy, with 95% confidence? (Hint: Don’t forget investigating variances. Use 98% confidence for that.)
A startup company’s ability to gain funding is a key to success. The funds raised (inmillions of dollars) by 50 startup companies appear below (The wall Street Journal,March 10, 2011).81 61 103 166 16880 51 130 77 7869 119 81 60 2073 50 110 21 60192 18 54 49 6391 272 58 54 4047 24 57 78 78154 72 38 131 5248 118 40 49 5554 112 129 156 31a. Construct a stem-and-leaf display
A startup company’s ability to gain funding is a key to success. The funds raised (inmillions of dollars) by 50 startup companies appear below (The wall Street Journal,March 10, 2011).81 61 103 166 16880 51 130 77 7869 119 81 60 2073 50 110 21 60192 18 54 49 6391 272 58 54 4047 24 57 78 78154 72 38 131 5248 118 40 49 5554 112 129 156 31a. Construct a stem-and-leaf display.b. Comment on the display.
Individuals filing federal income tax returns prior to March 31 received an average refund of $1,053. Consider the population of "last-minute" filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15). (a) A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early filers. Develop appropriate hypotheses such that rejection of H0 will support the researcher's contention. H0: μ ≤ $1,053Ha: μ > $1,053H0: μ ≥ $1,053Ha: μ < $1,053 H0: μ < $1,053Ha: μ ≥ $1,053H0: μ > $1,053Ha: μ ≤ $1,053H0: μ = $1,053Ha: μ ≠ $1,053 (b) For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $910. Based on prior experience, a population standard deviation of σ = $1,600 may be assumed. What is the test statistic? (Round your answer to two decimal places.) What is the p-value? (Round…
Individuals filing federal income tax returns prior to March 31 received an average refund of $1,089. Consider the population of "last-minute" filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15). A. A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early filers. Develop appropriate hypotheses such that rejection of H0 will support the researcher's contention. H0 : µ is greater than or equal to 1,089 (already answered) Ha : µ is less than 1,089 (already answered) B. For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $920. Based on prior experience a population standard deviation of σ =$1,800 may be assumed. What is the p-value (to 4 decimals)? C. Using a= 0.05, what is the critical value for the test statistic? Enter negative value as negative number. FYI, THIS IS…

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group each variable as categorical nominal/ ordinal numerical discrete/continuous