Health insurers are beginning to offer telemedicine services online that replace the common office visit. A company provides a video service that allows subscribers to connect with a physician online and receive prescribed treatments. The company claims that users of its online service saved a significant amount of money on a typical visit. The data shown below ($), for a sample of 20 online doctor visits, are consistent with the savings per visit reported by the company. 102 44 50 115 93 65 66 59 50 86 58 106 103 84 83 88 103 110 63 92 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings in dollars for a televisit to the doctor as opposed to an office visit. (Round your answers to the nearest cent x to $

Health insurers are beginning to offer telemedicine services online that replace the common office visit. A company provides a video service that allows subscribers to connect with a physician online and receive prescribed treatments. The company claims that users of its online service saved a significant amount of money on a typical visit. The data shown below ($), for a sample of 20 online doctor visits, are consistent with the savings per visit reported by the company. 102 44 50 115 93 65 66 59 50 86 58 106 103 84 83 88 103 110 63 92 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings in dollars for a televisit to the doctor as opposed to an office visit. (Round your answers to the nearest cent x to $

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 random sample of 20 individuals who graduated from harvard ago were asked to report the total amount of debt they had when they graduated from college and the total value of their current investments. the data set is below: Debt Invested 23719 25664 2327 63658 23846 23405 12262 43385 18480 32649 7823 54587 10857 45145 10085 48262 14813 40983 2299 65308 18154 31977 16650 39308 16699 34346 19120 35813 10809 47704 19566 32805 8679 50647 16647 34555 17952 33647 5454 59726 A) using a regression equation for predicting current investment based on college debt. What is the expected change in current investment for each additional dollar of harvard college debt? i got -1.8668 B) What is the predicted current investment for an individual who had a college debt of $5000? i got 58,629C) What proportion of the variation in current investment is explained by college debt? round to 4 decimal places only C needs to be answered
A random sample of 20 individuals who graduated from harvard ago were asked to report the total amount of debt they had when they graduated from college and the total value of their current investments. the data set is below: Debt Invested 23719 25664 2327 63658 23846 23405 12262 43385 18480 32649 7823 54587 10857 45145 10085 48262 14813 40983 2299 65308 18154 31977 16650 39308 16699 34346 19120 35813 10809 47704 19566 32805 8679 50647 16647 34555 17952 33647 5454 59726 A) using a regression equation for predicting current investment based on college debt. What is the expected change in current investment for each additional dollar of harvard college debt? B) What is the predicted current investment for an individual who had a college debt of $5000? C) What proportion of the variation in current investment is explained by college debt?
As health-care costs continue to increase, the number of employers who offer their employees telehealth options is growing. In 2021, net cost savings is estimated to be $19–$121 per telemedicine visit, depending on where the employee would have otherwise sought care (First Stop Health). The data shown below ($), for a random sample of 20 online doctor visits, are consistent with the savings per visit reported by First Stop Health. 93 106 55 77 94 77 52 33 84 48 49 73 92 83 41 56 41 97 74 101 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings (in dollars) for a televisit to the doctor as opposed to an office visit. (Round your answers to the nearest cent.)
TV advertising agencies face increasing challenges inreaching audience members because viewing TV programsvia digital streaming is gaining in popularity. The Harrispoll reported on November 13, 2012, that 53% of 2343American adults surveyed said they have watched digitallystreamed TV programming on some type of device.
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A sample of 15, 10 years -old children was taken to study whether watching television reduces the amount of physical exercise, causing weight gains. The number of kilograms each child was overweight by was recorded (a negative number indicates the child is underweight). In addition, the number of hours of television viewing per week was also recorded. These data are listed in the table below.Television(hours)423425353738313319293828293618Overweight (Kg)83006633-444216-3a. Use an appropriate plot to investigate the relationship between Television(hours) and Overweight (KG). Briefly explain the selection of each variable on the X and Y axes and why?b. Calculate and interpret the coefficient of correlation (r) between Television(hours) and Overweight (KG).c. Estimate a simple linear regression model and present the estimated linear equation. Then, interpret the coefficient estimates of the linear model.d. Determine the coefficient of determination (R2) and interpret it.e. Test the…
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