A random sample of 100 patients treated in a program for alcoholism and drug dependency over the past 10 years was selected. It was determined that 53 of the patients had been readmitted to the program at least once. At the 95% level, construct an estimate of the population proportion.

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Given data,The population proportion (P) = 77% = 0.77,Sample size (n) = 28,Number of injured driver…

Q: The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to…

A: Solution

Q: if other factors are held constant, as a sample size decreases, the estimated standard error?_____

A: Different types of standard errors are described below.

Q: For a repeated-measures ANOVA, if SSwithin treatments = 86, SSbetween treatments = 80, SSbetween…

A: F-Ratio = MSbetween treatmentsError

Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a…

A:

Q: An optometrist wishes to know the proportion of patients who undergo laser eye surgery who end up…

A:

Q: What percent of patients received pamidronate? What percent of patients experienced the occurrence…

A: Let us define some events A : patient receive pamidronate. B : patient experiences the occurrence of…

Q: A survey of 2310 adults in a certain large country aged 18 and older conducted by a reputable…

A: Given information- We have given that in a survey of 2310 adults in a certain large country aged 18…

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: In an October 2003 poll conducted by the Gallup organization, 684 of 1006 randomly selected adults…

A: Point estimate:The point estimate of population proportion is sample proportion.

Q: You take a random sample of size 25 students and find the 5 who understand this lecture. With 99%…

A:

Q: A survey of 2390 musicians showed that 398 of them are left-handed. Find a point estimate for p, the…

A: We have find population left handed..

Q: a. Out of a random sample of 74 birds, how.many would you expect to live longer than 9 years? b.…

A: Let X = number of years a bird lives.  Then, X ~ Exponential (0.125) Thus,  f(x) = 0.125e-0.125x .

Q: Compute the 1st quartile, 3rd decile and 20th percentile from the ffg. data: 3, 13, 11, 11, 5, 4, 2

A: Given : Data 3 13 11 11 5 4 2

Q: What happens to the standard error of an estimate when the sample size in a SRS decreases?

A: Standard error: Standard error is a measure which explains how accurate are the sample means to…

Q: n a cohort study, the risk ratio of developing diabetes was close to 1 when comparing consumers of…

A:

Q: During routine screening, a doctor notices that 20% of her adult patients show higher than normal…

A: Obtain the sample size of a preliminary estimate for p is 0.20 with the 95% confidence. The formula…

Q: Historically, the proportion of car parks in a particular city that offer early discount fees is…

A: a. Consider that p is population proportion of car parks in a particular city that offer early…

Q: If we collect a sample of blood platlet counts much larger than the sample included with exercise 3,…

A: From the given information, the sample of blood platelet counts much larger than the sample.

Q: A polling agency wants to determine the percentage of voters in favour of extending tax cuts. they…

A: Given information- Margin of error, E = 2% = 0.02 Confidence level, c = 95% Since nothing is known…

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A:

Q: The proportion of individuals insured by the All-Driver Automobile Insurance Company who received at…

A: Given that : Size of sample n = 180 proportion of individuals insured who received at least one…

Q: 1. A poor, primarily Republican county, located in the Midwest, with a mean educational level of 13…

A: Since, no question number is specified for answering, we'll be answering the first question only.…

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A: A random sample of 100 returns showed that 15 were audited; n=100 x=15 α=0.95

Q: In order to estimate attendance at a music festival, management counts the number of people entering…

A: it is follow A,P with first term a = 2250, d = 2250 , n = 20

Q: From a sample of 500 items, 30 were found to be defective. The point estimate of the population…

A: The point estimate of the population proportion is the sample proportion. The formula for point…

Q: Addmissions officer sampled 124 entering freshmen and found that 35 of them scored less than 530 on…

A: According to the provided information, x=35 n=124

Q: In a random consumer survey, randomly selected drivers of Porsche, Mercedes, and BMW were asked to…

A: Given: Porsche Mercedes BMW 10 8 0 8 6 4 6 10 2

Q: according to the university of nevada center for logistics Management, 6% of all merchandise sold in…

A:

Q: If a manufacturer conducted a survey among randomly selected target market households and wanted to…

A: From the provided information, Margin of error (E) = 6% that is 0.06 Confidence level = 95% The…

Q: Find the 5th and 95th percentiles for average temperatures from a group of 106 people using the…

A: The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

Q: In a recent election, 54% of all registered voters participated in voting. In a survey of 350…

A: Writing the sample population as a percentage i.e. 217 of 350:

Q: Participants selected 120 samples of size 3 from a population of 5 scores (0, 0, 0, 3, and 6) using…

A: Given data participants selected 120 samples of size 3 from a population of 5 scores using…

Q: A doctor believes that 80% of all patients having a particular disease will be fully recovered…

A: From the provided information, A doctor believes that 80% of all patients having a particular…

Q: According to the text, a researcher studied the effects of concentrations of lead on the life…

A: Sampling is a way of selecting cases from a population.

Q: If the shape of the population distribution of a variable is non-normal or unknown, how large a…

A:

Q: What is the point estimate of the true proportion of people in the population who are over 6 feet…

A: Given that, Sample of 50 peoples is to be drawn and out of which 14 are possessing  characteristic…

Q: Blank are more representative of a population, but blank are easier to obtain

A: The sample is a set of units that is obtained from a population, which represents the population.…

Q: A political campaign manager wishes to survey a number of voters to estimate the proportion of those…

A:

Q: A researcher selects all of the possible samples with n = 8 scores from a population and computes…

A: The mean of the sampling distribution of the sample mean is an unbiased estimator for population…

Q: In order to study the mean blood pressure of people in his town, Richard samples the population by…

A: We know that stratified sampling involves dividing the population into groups and randomly selecting…

Q: The test scores for a class of 203 students are computed. What is the location of the test score…

A: Third quartile is above 75% of the observations.

Q: What percentage of the data in a sample falls below the third quartile Q3?

A: There are three quartiles Q1, Q2 ans Q3. 25% of observations lies between each two quartiles.

Q: A poll found that 83% of people out of a survey of size 127 watch at least three hours of TV per…

A: Given: A poll found that 83% of people out of a survey of size 127 watch at least three hours of TV…

Q: Among 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: The sampling distribution of sample proportion is generated using the sample proportions of repeated…

Q: In a random sample of 500 teenagers 12 to 17 years old, it was found that 330 have regular access to…

A: A random sample of 500 teenagers 12 to 17 years old; n=500 It was found that 330 have regular access…

Q: A recent study showed that the cost of buying a typical shopping basket of 40 food items for…

A: Given data is 8100,6600,6150,5100,4900Arrange the data in ascending…

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A:

Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…

A: Sample size = n = 50 Sample number of events = x = 12 Sample proportion = p̂ = x/n = (12/50) =…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.