What size sample should be used to estimate a population proportion within 0.02 with 80% confidence if we know the population proportion is between 0.85 and 0.65?

Q: You want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A: Answer: From the given data, Margin of error (ME) = 1.6 Standard deviation(σ) = 19.7 95% confidence…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, You believe…

A:

Q: You want to obtain a sample to estimate a population mean. based on previ evidence, you believe the…

A:

Q: Suppose that the pulse rates of adult males vary from a low of 35 bpm to a high of 115 bpm.  Assume…

A: Minimum value=M=35, Maximum value=Mo=115, Margin of error=E=3

Q: Sales team of a New Ventures Company is in the process of introducing a new product. As an initial…

A: We want to find the sample size.

Q: What sample size is needed to give a margin of error within ±5% in estimating a population…

A: Here we need to find the required sample size. Since no preliminary estimate is given we take sample…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given Information: Confidence level = 80%  Error (e) = 0.05 Proportion (p) = 0.5 (assumed)  The z…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20-29 year old females. How many subjects…

A: formula for the sample size needed to estimate a population mean is

Q: a 95% confidence interval estimate for population mean is determined to be 75.38 to 86.52. if the…

A: We have  to find the confidence level is reduced to 90%, the confidence interval will....

Q: According to the American Cancer Society, in 2016 10.7% of the U.S. working population commute to…

A: From the provided information, In 2016, 10.7% of the U.S. working population commute to work by…

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: The formula for the sample size is as follows:

Q: You want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A: 99% ci for μ.E = 1.1σ = 18.2n = ?

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 22 for the population…

A:

Q: you want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A:

Q: What is the difference between a point estimate and an interval estimate of a population parameter?

A: A point estimate is a single value estimate of a population parameter, such as the sample mean. An…

Q: A rare birth defect occurs in approximately 0.5% of all cases in males. If we sample all the males…

A: Given information: The total number of males born in 2016 in a specific region is N = 200,000. It is…

Q: A researcher wishes speeders who exceed the posted speed limit on a particular stretch of road in…

A: Given that the confidence level is 98% Therefore, the significance level is 1-confidence…

Q: Find the margin of error at a 80% confidence level for estimating the population mean if n=11,¯x=39…

A: Givenn=11x=39s=6

Q: Check My Work At 95% confidence, how large a sample should be taken to obtain a margin of error of…

A:

Q: What sample size is needed to estimate the mean white cell blood count ( in cells per microliter)…

A: From the provided information, Population standard deviation (σ) = 2.5 Confidence level = 90% Margin…

Q: You want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A: Answer: Using the given data, Population standard deviation (σ) = 19.3 Margin of error (E) = 1.3 For…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population…

A: State the given values, The z value at 99% confidence level is:

Q: An event marketing executive thinks that the proportion of consumers who have seen his company’s…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of…

Q: estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed…

A: The sample size can be calculated as: n=z×σE2 Here, z = desired confidence level E = The allowable…

Q: doctor wants to estimate the mean HDL cholesterol of all 20 to 29 year old females. How many…

A: Given s=11.2 E=2

Q: If you want to be 99% sure confident of estimating the population mean to within a sampling error of…

A: The critical value from the standard normal table at 99% confidence level is,

Q: In the estimation of the population mean, what if given that last year mean is 7.05 and SD is…

A: Confidence Interval provides a range of values for the estimated parameter.

Q: What sample size is needed to estimate a population mean within t 70 of the true mean value using a…

A: According to the provided information, Population standard deviation (σ) = 140.625 Confidence level…

Q: What sample size is needed to give a margin of error within ±3% in estimating a population…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation 13 is for the population…

A: The sample mean is within 7 IQ points of the true mean and population standard deviation is 13.…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many…

A: Given information Standard deviation s = 16.4 Confidence interval = 0.95 Significance level(α) = 1-…

Q: 4. How large a sample must be taken to estimate the proportion of households in which a cell phone…

A: In probability theory, a normal distribution is a type of continuous probability distribution for a…

Q: You plan to build a 95% confidence interval estimate of the mean of a large population. You want a…

A: Givenconfidence level=95%Margin of error(E)=10standard deviation(σ)=200

Q: If you want to be 99% confident of estimating the population proportion to within a sampling error…

A: Answer:- Given, Confidence level, C = 99% = 0.99Error, E = 0.06Population proportion, p = 0.43 Using…

Q: True or false   Suppose we take many samples of the same size and calculate each interval estimate…

A: Solution Answer is True

Q: What is the margin of error för a sample of 34 students whose average height. with 90% confidence,…

A: Given Information: Given is 90% confidence interval for average height calculated using sample size…

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A:

Q: A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many…

A:

Q: What sample size is needed to give a margin of error within + 13 in estimating a population mean…

A: Given: c = confidence level = 99%E = Margin of Error = 13s = Standard deviation= 133 Find sample…

Q: Find the margin of error at a 80% confidence level for estimating the population mean if n = 31, 2 =…

A: According to given question, We have :- Sample size n= 31Sample standard deviation s  =  5Sample…

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: Given,Margin of error, E = 0.04Confidence level, C = 99% = 0.99

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.