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): 56.7 56.1 52.5 65.5 59.0 64.7 70.1 64.7 53.5 78.2 A USE SALT 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%3D % (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): 56.7 56.1 52.5 65.5 59.0 64.7 70.1 64.7 53.5 78.2 A USE SALT 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%3D % (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

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

: Identify the z-scores of the following given the mean (?) and the standard deviation (?). 1. ? = ?? , ? = ? Raw Score z-score 30 36 40 44 45 II.Construct the graph of the normal distribution given the following means and standard deviations. 1. ? = ?�� , ? = ? 2. ? = ?? , ? = ?
According to the Carnegie unit system, the recommended number of hours students should study per unit is 2. Are statistics students' study hours more than the recommended number of hours per unit? The data show the results of a survey of 15 statistics students who were asked how many hours per unit they studied. Assume a normal distribution for the population. 0.7, 4.1, 0.6, 4.4, 3.2, 0.8, 3.1, 3.8, 1.1, 3.3, 2.1, 1.5, 2.5, 2.3, 1.7 What can be concluded at the αα = 0.01 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest that the population mean study time per unit for statistics students is not significantly more…
in a population of Yorkshire hogs, sample statistics indicate the following: Average Days to 250 lbs. (Days)= 160 Variance of Days = 9 Use the graphing paper attached to illustrate the normal distribution of Days in this population. Draw the bell shaped curve, label the mean, label the parameters showing where 68%, 95% and 99% of the population would be.
Normal Distribution. The volume of water in commercially supplied fresh drinking water containers is approximately Normally distributed with mean 70 liters and standard deviation 0.75 liters. Estimate the proportion of containers likely to contain less than 70.5 liters. Select the correct response: 0.0082 0.8200 0.7468 0.1151
a. What does 1 standard deviation mean? b. What percentage of scores are falling between the mean and 1 standard deviation?
he quantitative data set under consideration has roughly a bell-shaped distribution. Apply the empirical rule to answer the following question. A quantitative data set has mean 20 and standard deviation 1. Approximately what percentage of the observations lie between 17 and 23?
Need help with this one in part D.
The weight gains of animals during a period of confinement follow a normal distribution of mean 39.0 and standard deviation 1.0 kg. Answer the following questions.a. Above what weight gain are 99% of the animals?
Assuming that the heights of college women are normally distributed with mean 63 inches and standard deviation 1.7 inches, answer the following questions. (Hint: Use the figure below with mean u and standard deviation O.) Area Under a Normal Curve 2.35% 13.5% 34% 34% 13.5% 2.35% P- 30 u - 20 u + 20 u + 30 68% 95% 99.7% (a) What percentage of women are taller than 63 inches? % (b) What percentage of women are shorter than 63 inches? (c) What percentage of women are between 61.3 inches and 64.7 inches? (d) What percentage of women are between 59.6 and 66.4 inches?
According to the Carnegie unit system, the recommended number of hours students should study per unit is 2. Are statistics students' study hours more than the recommended number of hours per unit? The data show the results of a survey of 12 statistics students who were asked how many hours per unit they studied. Assume a normal distribution for the population. 1.2, 4.3, 4.5, 1.4, 1.5, 2.7, 1.8, 2.4, 1.3, 2, 2.2, 1.3 What can be concluded at the αα = 0.05 level of significance? A. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly more than 2 at αα = 0.05, so there is enough evidence to conclude that the population mean study time per unit for statistics students is more than 2. The data suggest the population mean is not significantly more than 2 at αα = 0.05, so there is enough evidence to conclude that the population mean study time per unit for statistics students is equal to 2. The data suggest that the population mean study time per…
Refer to the following normal curve, with mean μ and standard deviation o. A data value of 99 corresponds to a standardized value of Select one: a. 2. b. 3. none of these 24 C. d. 45. e. 2.5. 95% of total area 84
What proportion of a normal distribution corresponds to z scores greater than -0.82? Question 10 options: 0.2061 0.2939 0.5000 0.7939