You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 12 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. You are interested in finding a 95% confidence interval for the mean number of visits for physicaltherapy patients. The data below show the number of visits for 12 randomly selected physicaltherapy patients. Round answers to 3 decimal places where possible.271126212225281328122123a. To compute the confidence interval use a (? distribution.b. With 95% confidence the population mean number of visits per physical therapy patient isbetweenandvisits.c. If many groups of 12 randomly selected physical therapy patients are studied, then a differentconfidence interval would be produced from each group. Aboutpercent of theseconfidence intervals will contain the true population mean number of visits per patient andaboutpercent will not contain the true population mean number of visits perpatient.

Given,sample size(n)=12sample mean(x¯)=21.417sample standerd deviation(s)=6.2006degrees of…

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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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You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 12 randomly selected physical therapy patients. Round answers to 3 decimal places where possible.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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