(21.) Health insurers are beginning to offer telemedicine services online that replace the com-mon office visit. Wellpoint provides a video service that allows subscribers to connectwith a physician online and receive prescribed treatments (Bloomberg Businessweek,March 4-9, 2014). Wellpoint claims that users of its LiveHealth Online service saved asignificant amount of money on a typical visit. The data shown below ($), for a sampleof 20 online doctor visits, are consistent with the savings per visit reported by Wellpoint.923440105835556494076489693747378931005382Assuming the population is roughly symmetric, construct a 95% confidence intervalfor the mean savings for a televisit to the doctor as opposed to an office visit. (35. The Consumer Reports National Research Center conducted a telephone survey of 2000adults to learn about the major economic concerns for the future (Consumer Reports,January 2009). The survey results showed that 1760 of the respondents think the futurehealth of Social Security is a major economic concern.What is the point estimate of the population proportion of adults who think the futurehealth of Social Security is a major economic concern.b. At 90% confidence, what is the margin of error?Develop a 90% confidence interval for the population proportion of adults who thinkthe future health of Social Security is a major economic concern.d. Develop a 95% confidence interval for this population proportion.number of motor yehieles are not

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Health insurers are beginning to offer telemedicine services online that replace the com- mon office visit. Wellpoint provides a video service that allows subscribers to connect with a physician online and receive prescribed treatments (Bloomberg Businessweek, March 4–9, 2014). Wellpoint claims that users of its LiveHealth 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 Wellpoint. 92 40 55 34 105 83 56 49 40 76 48 96 93 74 73 78 93 100 53 82 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings for a televisit to the doctor as opposed to an office visit.

Health insurers are beginning to offer telemedicine services online that replace the com- mon office visit. Wellpoint provides a video service that allows subscribers to connect with a physician online and receive prescribed treatments (Bloomberg Businessweek, March 4–9, 2014). Wellpoint claims that users of its LiveHealth 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 Wellpoint. 92 40 55 34 105 83 56 49 40 76 48 96 93 74 73 78 93 100 53 82 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings for a televisit to the doctor as opposed to an office visit.

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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Concept explainers

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.

Topic Video

Question

(21.) Health insurers are beginning to offer telemedicine services online that replace the com-
mon office visit. Wellpoint provides a video service that allows subscribers to connect
with a physician online and receive prescribed treatments (Bloomberg Businessweek,
March 4-9, 2014). Wellpoint claims that users of its LiveHealth 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 Wellpoint.
92
34
40
105
83
55
56
49
40
76
48
96
93
74
73
78
93
100
53
82
Assuming the population is roughly symmetric, construct a 95% confidence interval
for the mean savings for a televisit to the doctor as opposed to an office visit.

(35. The Consumer Reports National Research Center conducted a telephone survey of 2000
adults to learn about the major economic concerns for the future (Consumer Reports,
January 2009). The survey results showed that 1760 of the respondents think the future
health of Social Security is a major economic concern.
What is the point estimate of the population proportion of adults who think the future
health of Social Security is a major economic concern.
b. At 90% confidence, what is the margin of error?
Develop a 90% confidence interval for the population proportion of adults who think
the future health of Social Security is a major economic concern.
d. Develop a 95% confidence interval for this population proportion.
number of motor yehieles are not

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