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 55.9 53.5 65.9 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 55.9 53.5 65.9 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 %

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

See similar textbooks

Related questions

Q: A random sample of n = 16 men between 30 and 39 years old is asked to do as many sit-ups as they can…

Q: 1. We will assume the sample data are as follows: n= 100, x= 197.1, µ = 191 and o = 25.6. Indicate…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Which situation comprises microdata? A - the average height of students in each class in your…

A: We have to choose the situation which comprises microdata.

Q: Suppose one would like to construct a 90% confidence interval for a sample mean, when the population…

Q: HYPOTHESIS TESTING s: Identify a product available in your home. Measure the weight (g) or length…

Q: Using Excel, conduct a t-test (at the alpha = 0.10 significance level) on whether the mean of X2 is…

Q: a-- IA 1) - 16 - (3+ 1- 12 Excel output for the hospital labor needs case (sample size: A 16) value…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…

Q: You'd like to test the null hypothesis that the means of the two samples (column A and column B) are…

Q: Price IndPrice PriceDif AdvExp Demand X1 X2 X4 X3 Y 3.85 3.80 -0.05 5.50 7.38 3.75 4.00 0.25 6.75…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 180 students were asked to randomly pick one of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The…

A: We have given thatn = 74x = 11

Q: 17. A nutritionist wants to study the effect of age on muscle mass in milligrams (mg) per…

A: The given box plot represents the effect of age on muscle mass (mg/ml) for women. The population is…

Q: Based on the understanding of the Z-statistic and the T-statistic. A confidence interval…

A: Confidence interval is the interval range where the population parameter exist. It used to determine…

Q: +++++ it. b 10. Which data set has the smallest standard deviation of the x-coordinates?

Q: ACTIVITY A. Compute the z for each given claim (po), observed proportion (p ) and the sample size…

A: Given that A) 1) p0=10%=0.10 , p^=0.30 , n=100 2) p0=0.12 , p^=0.32 , n=248 3) p0=20%=0.20 ,…

Q: 1. Write down the first six terms of the Fibonacci sequence defined by, when. (Show your solution.)…

A: Please note that as per our guidelines if the student posts multiple questions we can answer the…

Q: Pennies minted after 1983 are known to weigh exactly 2.50 grams. You can use this information to…

A: We have given that, Population mean (μ) then we have to state the null and alternative hypothesis?

Q: Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs.…

A: Let X be the random variable from Normal distribution with mean (μ) = 245.7, standard deviation (σ)…

Q: ACTIVITY Formulate a Null Hypothesis and Alternative Hypothesis for each of the following and write…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: The grades of seven students in the first and second grading periods are shown below. 80 78 76 82 84…

A: Given the grades of seven students in the first and second grading periods.

Q: A teacher gives a test to a large group of students results are closely approximately by a normal…

A: A teacher conducts test to large group of students results are normally distributed with mean 73 and…

Q: III. The height of the PBA players mean of 193 cm with standard deviation of 7. If 30 of them are…

A: Given,sample size(n)=30mean(μ)=193standard deviation(σ)=7

Q: What is the value of the test statistic? Round your answer to two decimal places. Z = i What is the…

A: here from given information , here testing H0 : po = pc H1 :po > pcsignificance level = 0.05…

Q: Consider the following data: 10,6,1,2,8,9 Calculate the value of the sample standard deviation.…

Q: Using the standard normal distribution, find the two z-scores that that form the middle shaded…

Q: When Y,, Y,..,Y, is a random sample from N(u,0), we learned in class that the Y – Į statistic T = S/…

A: Given Information: Consider a random sample Y1,Y2,...,Yn from Nμ,σ2.

Q: A study tested the effects of 4 different dosages of a new antidepressant on reducing depressive…

A: One way repeated measures ANOVA One way repeated measures ANOVA come into play when participants…

Q: 4. In a study, there are three independent groups. In Group 1, the scores are 2, 7, and 3; in Group…

A: The Anova is used to measure the mean significant between more than two groups. It used F…

Q: Show that the following belong to the exponential family 1. The pareto distribution: f(y; θ) =…

Q: If you were a student, inscribe the things you’ve learned about the different concepts of Testing…

A: We have given the following statement about the Testing of hypothesis. We perform a test of…

Q: How is dfwithin and dftotal calculated in statistics? Please write out words for formulas.

A: Given that

Q: Answer letter a with the red words. Provide a brief explanation

A: Variable are values that tends to change. There are two types of variable they are independent and…

Q: 2. An independent research group is intere through Cesarian Section is decreasing. Fc through…

Q: The following confidence interval gives a range of likely values for the average weight of all…

Q: A study aims to determine if a diet supplemented with phytase has a greater effect from the diet…

A: A random sample of 10 broilers were fed with the diet supplemented with phytase and another random…

Q: II. A population consist of numbers 2,4,6,8,10,12 and 14 with a sampling distribution of 5. 3. Find…

A: Mean is the measure of central tendency. It is calculated by adding all the measure and divided by…

Q: (b) In a simple random sample of 350 voters, 185 said that they were planning to vote for the…

A: b)Givensample size(n)=350x=185confidence interval = 95%

Q: Para me ter No fatioe 1) Merage falavy of Poly fachine Vhinhy of thế Phili ppwer PURI gra dvoes at…

Q: 6. The length of life of an instrument produced by a machine is rounded off to the nearest tenths…

Q: Iranian researchers studied factors affecting patients' likelihood of wearing orthodontic…

A: For the given data Find a) Calculate the numerator for the F statistic (i.e., between-groups…

Q: 4 furvival rote of th Philippines Ineagt cancer in ir below 50%

A: Given that Survival rate of breast cancer in the Philippines is below 50%

Q: The grades of seven students in the first and second grading periods are shown below. 80 78 76 82 84…

A: Given Information: x 80 78 76 82 84 85 75 y 84 79 75 86 84 77 78

Q: E 2 Choose the best answer. The mean of the winning scores of a bowling tourmament over the last 10…

Q: The average public elementary school has 468 stu deviation of 87. If a random sample of 38 public el…

A: The average public elementary school is 468 with standard deviation 87 μ=468σ=87 A random sample of…

Q: Identify the type of data: Height of students in a class. Continuous Numerical Data…

A: According to the given information in this question We need to identify the type of data

Q: A music manager wanted to construct a 95% confidence interval for the lenght of songs produced at…

A: Given 90% CI for population mean μ 3.05 < μ < 4.45

Q: If N= 36,500 and n = 387, what is the proportion?

A: Proportion is defined as the ratio of two similar quantities. Here, the proportion is defined as the…

Q: Directions: Illustrate the rejection region given the critical value and identify if the t-values…

Q: a) In regression analysis, to obtain the least square estimators of a and B, the SSR of Squares of…

Q: election. Although it is not known by the polling organization, p = 0.5 is the actual proportion of…

A: Given that n=400 , p=0.5

Question

56.5

55.9

53.5

65.9

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 %

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution