A pollster wishes to estimate, with 99% confidence, the proportion of people who believe that recent changes in climate are primarily due to human activity. Find the minimum sample size necessary to achieve a margin of error of less than 2%. a. Assuming no previous estinmates are available. Round your answer up to the next integer.

Q: When estimating the minimum sample size required for a research, if we do not have the preliminary…

A: It is given that, preliminary estimate of proportion is not known.

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: From the provided information, Margin of error (E) = 3% that is 0.03 Confidence level = 95% And

Q: Find the mean of the set of data below and construct a sampling distribution, without replacement…

A: Mean is generally represented as total sum of all observations divided by number of observations.…

Q: Find the mean of the sampling distribution of sample means using the given information. Round to one…

A: Here, mean is 44 and standard deviation is 8. Sample number is 49. We will use sampling…

Q: (b) What is the minimum sample size needed using a prior study that found that 44% of the…

A: It is given that margin of error (E) is 0.03 and the confidence level is 0.95.

Q: To apply the central limit theorem to the sampling distribution of the sample mean, the sample is…

A: We have to find sample size required to consider sample as large sample.

Q: You work for NASA and are interested in determining the population proportion, with 99% confidence,…

A:

Q: Whether the durability of a raw material is equal to a certain value 695 will be tested with…

A: It is required to test whether the durability of a raw material is equal to the given value or not.…

Q: a) With no prior research, what sample size should you gather in order to obtain a 0.015 margin of…

A: When we don't have any prior information about the population proportion, we generally take it as…

Q: c) If the sample size were 100 instead, how would your limits and conclusions change? UCL (enter…

A:

Q: Find the mean of the sampling distribution of sample means using the given information. Round to one…

A: Given information- Population Mean µ = 62 Standard deviation (σ) = 10 Sample size, n = 81 We have to…

Q: The larger the sample size, the smaller the standard error. True or Fale?

A: Given that, The larger the sample size, the smaller the standard error.

Q: from the given parameters of the population and sample size. and ox Determine p=81, o = 18, n= 36…

A:

Q: (b) What would the sampling distribution of the sample mean for a random sample of size n=9 years…

A:

Q: If σ = 35, what sample size would you need to get the standard error to be at most 2.5? If the…

A:

Q: Suppose that you have a group of 1,000 city government employees and you want to survey them to find…

A: Given Information: Total Population = 1000 Margin of error = 0.05 Consider the proportion = 0.5 The…

Q: Given the desired margin of error, population standard deviation, and level of significance, we use…

A: Solution

Q: Construct the sampling distribution of the sample mean for the following population and with the…

A:

Q: An environmental agency took a map of a region near a former industrial waste dump and placed a grid…

A:

Q: determine the mean and standard deviation of sampling distribution using n=1200, p=0.499

A:

Q: We need to estimate the percentage of businesses that plan to hire additional employees in the next…

A:

Q: a. List the 9 different possible samples, and find the mean of each sample. b. What is the mean of…

A:

Q: Determine μ  and σ  from the given parameters of the population and the sample size. Round the…

A:

Q: a) With no prior research, what sample size should you gather in order to obtain a 0.02 margin of…

A: margin of error = zα p(1-p)/n margin of error = 0.02 for 95% confidence interval zα = 1.96

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

A:

Q: As a manufacturer of golf equipment, the Spalding Corporation wants to estimate the proportion of…

A: From the provided information, Margin of error (E) = 0.025 Confidence level = 99% Assuming the…

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

A: question: If a manufacturer conducted a survey among randomly selected target market households and…

Q: According to one study, 40% of online orders will experience a shipping delay. A second study wants…

A: Given P-cap=0.40 Margin of error=0.01 Alpha =0.05

Q: Find the interval containing the middle-most 34% of sample means:

A: Let X denote the distribution of values and x¯ be the sample means of the samples of size n=15.…

Q: Find the standard error of the mean for each sampling situation (assuming a normal population)…

A: The formula for standard error of the mean is, σ/√n, where σ is the standard deviation and n is the…

Q: Suppose the true proportion of voters in the county who support a school levy is 0.65. Consider the…

A: The true proportion of voters in the county who support a school levy is p=0.65 The standard…

Q: In preparing a report on the economy, we need to estimate the percentage of businesses that plan to…

A:

Q: Use the given data to find the minimum sample size required to estimate the population proportion.…

A: It is given that margin of error (E) is 0.0008 and the confidence level is 0.99.

Q: 4b. Using the same information from 4a, what is the standard error of the sampling distribution?…

A:

Q: A newspaper asks its readers to call in their opinion regarding their taste in reading. What type of…

A:

Q: Find the mean of the sampling distribution of sample means using the given information. Round to one…

A: Given,mean(μ)=59standard deviation(σ)=10sample size (n)=36

Q: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

Q: Construct the sampling distribution of the sample mean for the following population and with the…

A: Given that the population is  Xi: 2,9,11,14  We'll draw the samples of size 2 from the given…

Q: sixty-five percent of those surveyed reply No to a certain question. If 234 reply No, what is the…

A: Given 65℅ of S replied  No to a question, This number is given to be 234 so

Q: (c) If we want a margin of error of only + 1.0, what sample size is needed? Round your answer up to…

A: The following information is provided. consider the level of significance is 0.05. Also,

Q: Find the mean of the sampling distribution of sample means using the given information. Round to one…

A:

Q: Consider a population proportion p = 0.27.  Calculate the standard error for the sampling…

A: It is given that population proportion p = 0.27.  The standard error of the sample proportion is…

Q: If we want to estimate the population proportion with a margin of error of 0.10 for a level of…

A: Given data,E=0.10z value at 90% confidence is Zc=1.645let proportion p=0.5n=?

Q: We are interested in conducting a study in order to determine what percentage of voters of a state…

A:

Q: A television station asks its viewers to call in their opinion regarding the desirability of…

A: The convenience sample is obtained utilizing the subjects that are easily or conveniently available…

Q: Construct the sampling distribution of the sample mean for the following population and with the…

A:

Q: 1. A department store has determined that 20% of its customers are very satisfied. What is the…

A: Given data: Sample proportion = 20% To find: What is the minimum sample size required to approximate…

Q: A researcher deciding to increase the desired sample size from n = 25 to n = 100 prior to collecting…

A: Given that: A researcher wants to Increase the size of the sample from n =25 to n=100 prior of the…

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.