What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):56.5 56.1 52.5 66.3 59.064.7 70.1 64.7 53.5USE SALTS =Assume that the population of x values has an approximately normal distribution.(a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to four decimal places.)X =%%78.2(b) Find a 90% confidence interval for the population average of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.)lower limit%upper limit%

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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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The mean value of land and buildings per acre from a sample of farmers is $1500, with a standard derivation of $100. The data set has bell-shaped distribution. Using the empirical rule, determine which of the following farms, whose land and building values per acre are given, are unusual (more than two standards derivations from the mean). Are any of data values very unusual (more then three standard derivations from the mean)? $1357 $1719 $1316 $1176 $1598 $1491
Weights of women in one age group are normally distributed with a population standard deviation of 14 lb. A researcher wishes to estimate the mean weight of all women in this age group. Find how large a sample must be drawn in order to be 90% confident that the sample mean will not differ from the population mean by more than 3.0 lb. O a. 59 O b. 84 O c. 60 O d. 57
An employment information service claims the mean annual salary for senior level product engineers is $98,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At a =0.01, test the claim that the mean salary is $98,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Annual Salaries 100,634 82,467 102,518 91,169 96,401 93,603 112,681 O 74,214 77,029 76,190 103,988 104,007 82,125 84,983 110,381 80,921 (a) Identify the claim and state Ho and Ha. Ho: Ha (Type integers or decimals. Do not round.) The claim is the hypothesis. (b) Use technology to find the critical value(s) and identify the rejection region(s). The critical value(s) is/are to =. %3D (Use a comma to separate answers as needed. Round to two decimal places as needed.) Choose the graph which shows the rejection region. O A. O B. Oc. O D. -to to t> to 0 to - to 0 to 4 - to 0 6 to 0 Click to select your answer(s).…
Given a normal distribution with a mean of 50 and a standard deviation of 7 assign the values to the axis below for the mean and the 3 values above and below the mean
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): 57.3 55.5 53.3 65.5 59.0 64.7 70.1 64.7 53.5 78.2 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to one decimal place.) % S = % (b) Find a 90% confidence interval for the population average u of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.) lower limit % upper limit %
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): 57.3 55.9 52.8 66.3 59.0 64.7 70.1 64.7 53.5 78.2 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to one decimal place.)
Find the range, vanance, and standard deviation for the given sample data. Include appropriate units in the results. Listed below are the measured radiation absorption rates (in Wikg) corresponding to various cell phone models. If one of each model is measured for radiation and the results are used to find the measures of variation, are the results typical of the population of cell phones that are in use? 1.16 0.82 0.51 0.69 1.11 0.82 0.69 0.75 0.52 0.53 1.34
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): 57.5 56.5 52.9 65.5 59.0 64.7 70.1 64.7 53.5 78.2 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to four decimal places.) x= _____% s= _____% (b) Find a 90% confidence interval for the population average ? of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.) lower limit ______% upper limit ______%
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): 56.5 55.7 52.5 66.3 59.0 64.7 70.1 64.7 53.5 78.2 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to four decimal places.) x= %s= % (b) Find a 90% confidence interval for the population average μ of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.) lower limit %upper limit %
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): X = 57.3 S = 56.1 52.9 65.9 59.0 USE SALT 64.7 70.1 64.7 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to four decimal places.) % % 53.5 78.2 (b) Find a 90% confidence interval for the population average of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.) lower limit % upper limit % MK NOTES ACIONOUR
Assuming that the heights of college women are normally distributed with mean 65 inches and standard deviation 3 inches, what percentage of women are taller than 65 inches? O 99.9% 15.9% O 50.0% O 84.1% O 0.1%
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): 57.1 55.9 52.5 65.5 59.0 64.7 70.1 64.7 53.5 78.2 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to four decimal places.) x= %s= % (b) Find a 90% confidence interval for the population average μ of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.) lower limit %upper limit %

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