Subject123456789101112Cigarettes Smoked00091320273932445362Days Absent138104148612161216Is there any significant relationship between cigarettes smoked and the days absent ofthe employees? Use the alpha given by the output.

The correlation coefficient is 0.7145 using the Excel formula “=CORREL(F1:F12,G1:G12)” The…

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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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Question 6 of 14 Identify the reasons the following statements are incorrect. Not all reasons will be used. Researchers found that the correlation between the number of vacation days available per year and the employees' years of employment is r = 0.65 days. The correlation between the average lifespans of animals and the animals' species is r = -0.78. The number of steps people take while walking and the distance they walk are highly correlated (r = 1.12). The correlation between average gas mileage in miles per gallon and average highway speeds in miles per hour differs from the correlation between average gas mileage in miles per gallon and average highway speeds in kilometers per hour. Answer Bank Correlation should be between -1 and 1. Correlation should depend on units. Correlation should be greater than 0. Correlation should not depend on units. One of the variables should be categorical. Both variables should be numerical.
QUESTION 4 The Global Business Travel Association (GBTA) reported the domestic airfare for business travel for the current year and the previous year. Below is a sample of 6 flights with their domestic airfares (in $) shown for both years. Suppose GBTA wished to see if the average airfare for the current year is greater than the average airfare for the previous year at a=.1. Current 355 743 560 449 263 651 Previous 348 746 549 440 250 652 For the hypothesis stated above, what is the critical value (in terms of "Current" minus "Previous")? O a. 1.476 O b. 1.440 O C. 1.383 O d. None of the answers is correct O e. 1.372 QUESTION 5 Sav Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro
QUESTION 7 The table below displayes the number of cars arriving at a fuel station per hour on different times of the day. 1 13 13 28 37 74 110 178 200 For the above table find the third decile?
QUESTION 3 The electric power consumed each month by a chemical plant is thought to be related to the average ambient temperature x1, the number of days in the month x), the average product purity x3, and the tons of product produced x4. The past year's historical data are available and are presented in the following table. 240 25 24 91 100 31 236 290 21 90 95 110 45 24 88 274 60 25 87 88 301 65 25 91 94 316 72 94 26 25 25 99 97 300 80 87 296 84 86 96 267 75 24 88 110 276 60 25 91 105 288 261 50 25 90 100 38 23 89 98 If y= ao+@1X1+a2x2+@3X3+ a4X4 represents the regression model. What is the value of a4? Use 4 decimal places.
work shown would be so appreciated!
QUESTION 12 If the variables have a negative association, then their correlation must be: A. less than-1. O B. between 0 and 1. OC. greater than 1. D. between-1 and 0.
A researcher wants to see if there is a difference in APGAR scores of newborns depending on whether the mother smoked during pregnancy or not. She collects data and analyzes the results using SPSS. What is the correct way to report the results in APA style? Question 23 options: t(58) = 3.288, p>.05 t(58) = 3.288, p= .002 t(26.5) = 3.278, p<.05 t(26.5) =3.278, p=.003
QUESTION II:The following data gives the scores of 13 students in a Biostatistics exam.75 80 28 70 95 82 75 64 61 90 81 65 91a) Find the following statistical measures 1. Range 2. 34th percentile 3. Interquartile Range
Question 2: ten people had a diabetes test every day The table shows the data based on age and number of diabetes tests. No of People A B C D E F H I J G Age (X) 58 70 62 50 58 40 64 37 68 61 Test result (Y) 110 100 120 124 131 130 134 135 126 115 You are a statistical analyst at the college, and the medical assistant has sent the above report to you because you need to find the relation between two variables based on y = a + bx. How will you proceed to submit this report?
1 2 3 Class Tally 4 5 1 2 3 4 Class 5 IIII IIIII Total IIIII IIII IIIII I 6 5 4 5 6 Frequency 5 4 4 Frequency 5 Tennis 4 Classes Basketball 8 Football 2 Cricket 4 Swimming 11 5 4 f.x 10 18 20 20 Cumulative frequency 4 9 15 20 N= Ef=24 Exf=72 24 4 9 15 20 24 Differentiate between the data in each table and in your opinion which table would give a better representation of ages of the students at your school. Cumulative frequency Frequency Angle on the pie chart 6. Complete the table above and create a pie chart.
QUESTION 3 The data to the right represent the travel time to work for residents of Hartford County, CT. Frequency 24,358 39,112 10 to 14 minutes 62,124 15 to 19 minutes 72,854 20 to 24 minutes 74,386 25 to 29 minutes 30,099 30 to 34 minutes 45,043 35 to 39 minutes 11,169 40 to 44 minutes 8,045 45 to 59 minutes 15,650 60 to 89 minutes 5,451 90 or more minutes 4,895 Source: United States Census Bureau Travel Time Less than 5 minutes 5 to 9 minutes (a) If the total number of resicdents in the survey is 393,186, what is the probability a randomly selected resident has a travel time of 90 or more minutes? Write as a decimal rounded to 4 places. (b) Compute the probability that a randomly selected resident of Hartford County, CT will have a commute time less than 90 minutes. Write as a decimal rounded to 4 places.
Question 6 Find the mode for the following data. Deliveries Each Week Frequency 7 5 4 2 Mode > = 5 10 15 20

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Subject 1 2 3 4 5 6 7 8 9 10 11 12 Cigarettes Smoked 0 0 0 9 13 20 27 39 32 44 53 62 Days Absent 1 3 8 10 4 14 8 6 12 16 12 16 Is there any significant relationship between cigarettes smoked and the days absent of the employees? Use the alpha given by the output.