A corporation is interested in estimating the total earnings from sales of color television sets at the end of a three-month period. The total earnings figures are available for all districts within the corporation for the corresponding three-month period of the previous year. A simple random sample of 13 district offices is selected from the 123 offices within the corporation. a) Using a ratio estimator, estimate ty and place a bound on the error of estimation. Use the data in the accompanying table and take t = 128,200. b) Also estimate the mean earnings for office within the corporation and place a bound on the error of estimation.

Q: For a population with µ = 60 and σ = 20, the Sampling distribution of the Mean, based on n = 16 will…

A:

Q: In a random sample of size 58, 29 people say they generally get less than 8 hours of sleep a night.…

A: Solution: Let X be the number of people say they generally get less than 8 hours of sleep a night…

Q: A systematic sample of size eight scores is selected from a population of 400 scores and the…

A:

Q: 1. Find the sample size required from a population of 10,000, given a margin of error 570. Use…

A: Population Size N=10000 Margin of Error e=0.05 We have to find required sample size from population.…

Q: 1. Find the sample size required from a population of 10,000, given a margin of error 5%. Use…

A: Provided data is, Population is 10,000 and margin of error is 5%. Data classified in strata as:…

Q: Describe the sampling distribution of p on the basis of large samples of size n. That is, give the…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, we have…

Q: Twenty-five samples of 100 items each were inspected when a process was consideredto be operating…

A: a.

Q: It is known that 55% of customers who shop more than 2000 TL in a market shop in installments.…

A:

Q: Consider a sampling distribution with p=.14 and samples of size n=5000 Using the appropriate​…

A: Solution: From the given information, p=0.14 and n=5000.

Q: In a random sample of 81 professional actors, it was found that 8 were extroverts. Let p represent…

A: Given  In a random sample of 81 professional actors, it was found that 8 were extroverts. Let p…

Q: If n is multiplied by the factor k in the binomial dis- tribution having the parameters n and θ,…

A: In question, Given that If n is multiplied by the factor k in the binomial distribution having the…

Q: Suppose you wish to find the average annu salary for school teachers in the United States. You…

A: Given data,Mean μ=53145sd    σ=16451n=31Find 95% CI?

Q: To test whether the enactment of seatbelt legislation had any association with injuries to vehicle…

A:

Q: A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who…

A:

Q: A pollster wishes to estimate, with 99% confidence, the proportion of people who believe that recent…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: A sample of size 3 is taken from a population of the number of students in each class of Grade 9…

A: Given, n = 3 No. of students 25 30 35 40

Q: From a normal distribution with μ = 76 and σ = 6.3, samples of size 48 are chosen to create a…

A: See the handwritten solution

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: o satisfy the desired margin of error, a sample size no smaller than is needed.

A: Given that Margin of error, E = 0.03 Confidence level is 95%, then the critical value of Z is 1.96…

Q: Use the given sample to construct a 95% conf estimate the population standard deviation o Bample…

A: s2= 72=49 The critical values for \alpha = 0.05α=0.05 and df = 19df=19 degrees of freedom are…

Q: 27. What sample size should you take to be 95% confident that the estimate of the true proportion of…

A:

Q: 5 Just prior to jury selection for O. J. Simpson's murder trial in 1995, a poll found that about 20%…

A: Given that  Let X denotes the number of jurors believing in Simpson's innocence  20% of the adult…

Q: Suppose that the standard error for the sampling distribution of the mean of time spent on an App…

A: From the provided information, Standard deviation of sampling distribution = 10 minutes when sample…

Q: 4. A random sample of n = 60 measurements is obtained from a population with µ = 192 and o =…

A: Given, Population is infinite. Sample size=n= 60Population mean=μ=192Population sd=σ =43

Q: Since the sampling distribution of X possesses a different standard deviation value from X, it…

A:

Q: According to the central limit theorem, for a relatively large sample size, the variable x is…

A:

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

A:

Q: The Los Angeles City Controller's office calculated that in 2013, the city employed 4703047030…

A: Given: 2013 Number of full time employees = 47030 Number of part time employees = 10142 p denotes…

Q: A study is to be made to estimate the proportion of residents of a certain city and its suburbs who…

A: Given: Margin of Error ME= 0.06 Confidence level c= 0.90

Q: For the purposes of constructing modified boxplots, outliers are defined as data values that are…

A:

Q: The times required by three workers to perform an assembly-line task were recorded on five randomly…

A: Hypothesis: Null hypothesis: H0: There is no difference in the average average time needed for the…

Q: In a random sample for 56 professional actors, it was found that 46 were extrovert.let p represent…

A: Given that in a random sample for 56 professional actors, it was found that 46 were extrovert. i.e.…

Q: A pollster wishes to estimate, with 95% confidence, the proportion of people who believe that recent…

A: a) Assume p-hat as 0.5, since no preliminary estimate is available.

Q: A random survey of enrollment at 10 community colleges across the United States yielded the…

A: Solution: Let X be the random variable. The given data for X is 2523, 1707, 5420, 2835, 1129, 5452,…

Q: 1. Find the sample size required from a population of 10,000, given a margin of error 5%. Use…

A: Hello, Thank you for the question. According to our honor code can answer only one question at a…

Q: An industrial designer wants to determine the average amount of time an adult spends building an…

A: Given information: Confidence level = 95% Significance level α=0.05 The given data is as follows:…

Q: Suppose the commuting time on a particular train is uniformly distributed between 34 and 54 minutes.…

A: Given that the commuting time on a particular train is uniformly distributed between 34 and 54…

Q: A marine biologist wants to estimate the average weight of a population of dolphins living in a…

A: Note: the options for the answers are not given. So, the answer is written in assumption. In order…

Q: A study is to be made to estimate the proportion of residents of a certain city and its suburbs who…

A: From the given information, Margin error (E) = 0.03 Assume sample proportion = 0.5   The objective…

Q: Suppose a random sample of size n=25 taken from a very large population with the mean  μ= 90 and a…

A: Solution : Given : n = 25 μ = 90 σ = 6.4 Sampling distribution of the mean,  μx¯  = μ = 90 σx¯ = σn…

Q: The Ergonomic engineer collected the following blood pressure data for the experiment: Worker 1:…

A: Given Information: Consider the given ANOVA statistical output.

Q: The local sheriff has staked his campaign for re-election on the claim that that at least 88% of the…

A: Givensample size(n)=66p^=80%=0.80p=88%=0.88

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

A:

Q: Suppose a simple random sample of size  n = 50 is obtained from a population whose size is N =…

A:

Q: 5. At a certain college, it is estimated that at most 35% of the students ride bicycles to class. At…

A: Given information: It is found that 28 students out of 90 in a certain college ride bicycles to the…

Q: Then, compute the mean M for the new sample (round to one decimal).

A: The mean for the new sample is, Mean=∑xn=0+2+1+0+6+1+0+28=128=1.5

Q: According to the central limit theorem, for samples of size 64 drawn from a population with u = 800…

A: Solution: From the given information, µ=800 and σ=56.

Q: An auditor revlewed 25 oral surgery Insurance clalms from a particular surgical office, determining…

A:

Q: What is the Central Limit Theorem? It is always true that as the sample size, n, increases, the…

A: According to Central limit Theorem , if the sample is chosen randomly , distribution of sample means…

Q: c. If a random sample of size n = 5 is selected with replacement, compute for the following: Number…

A:

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.