Is the sample size of survey is multiplied by 100, then by what factor is the margin of error multiplied by?

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: A recent graduate chooses 4 continents to visit from the 7 in the world. What is the size of the…

A: A recent graduate chooses 4 continents to visit from the 7 in the world total=7 choose =4

Q: A sample of size 80 which found to contain 21 smokers. What is the sample proportion of non-smokers…

A: A population is the complete set of elements for which the study or experiment is conducted. A…

Q: both companies used the same sample size, what does this imply about the margin of error for each…

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Q: Problem: Which double sampling plan should be used for a lot size of 1500 and an LTPD of 5% with a…

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Q: In order to estimate the population proportion with a high school education,  you need a minimum…

A: It is given that margin of error (E) is 0.07 and the confidence level is 0.95.Here,

Q: Explain in your own words the advantages of bigger random samples in a sample survey

A: Explain in your own words the advantages of bigger random samples in a sample survey

Q: Is the sample size of survey is multiplied by 25, then by what factor is the margin of error…

A: Solution

Q: A poll in Canada states that 67% of all respondents favor imposing the death penalty. The poll was…

A: Given that - A poll in Canada states that 67% of all respondents favor imposing the death penalty.…

Q: Explain why you should get a much better prediction for μ by using x from a sample size n rather…

A: The confidence interval on mean is given as x-Zα2sdn≤μ≤x-Zα2sdn where  μ=population meanx=sample…

Q: Consider a simple poll that is measuring the proportion of citizens that hold a particular political…

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Q: What sample size should you gather to achieve a 0.7 hour margin of error?

A: here given , population standard deviation  = 4.2 hour  confidence level = 99% MOE  = 0.7

Q: Explain why populations are sampled and describe four methods to sample a population.

A: The population consists of all the data points and usually populations are very large. A sample is a…

Q: ucled a survey among randomly selected target market households and wanted to be 99% confident that…

A: Let us assume sample proportion (p^)=0.51-p^=1-0.5=0.5α=1-0.99=0.01α2=0.025Z0.025 =2.58 (from…

Q: A balance used in an entomology lab to weigh grasshoppers is quite old and has been used for…

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

A:

Q: What test can we use to determine the sample size needed?

A: Confidence intervals for a parameter take the following general form: Point Estimate ± Margin of…

Q: The sample size required is (Round up to the nearest integer.)

A: Here use formula of margin of error

Q: Describe the sampling distribution of the difference between two sample means when large samples are…

A: Sampling Distribution: The sampling distribution of the difference between Two mean shows The…

Q: Describe the large sample test procedure to test the equality of two proportions.

A: FOR LARGE SAMPLE SIZE WE SHOULD USE Z TEST AND DETAILED PROCEDURE IS GIVEN IN THE SECOND STEP.

Q: What is formula for sample mean?

A: The sample mean is also known as the average of the sample. The sample mean is a measure of central…

Q: What is the difference between a cluster sample and a stratified sampling

A: There are broadly two types of sampling procedures or methods: one is probability and the other is…

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: What are the seven major steps involved with sampling?

A: The seven major steps of sampling is given below:

Q: Teip An advocacy organization surveys 967 citizens of country A and 182 of them reported being born…

A: Sample proportion: Sample proportion is the proportion of individual in a sample with specific…

Q: ve bi

A: It would be better if we enquire with all students, when the strength of class students is little.…

Q: Describe about the All Possible Random Samples.

A: The random samples can be selected in the following methods: Simple random sampling: If a sample of…

Q: Determine the sample size if o = 6, population mean = 25, sample mean = 23 and the desired degree of…

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Q: Explain the EFFECT OF SAMPLE SIZE.

A: The size of our sample defines how much information we have and thus, in part, decides our precision…

Q: recent poll reports that between 53% and 59% of voters will vote for president george in the next…

A: The confidence interval is (53%, 59%).

Q: If the sample size is increased, the margin of error will decrease.   True or False

A: Given statement : " If the sample size is increased, the margin of error will decrease "

Q: what sample size should be used?

A: Given :  Margin of error=E=3%=0.03 Significance level=α=0.05 Since , the estimate of the population…

Q: 1. How many samples must be considered from a population of 28,000 students, if 5% margin of error…

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Q: When a sampling technique introduces a considerable amount of bias, increasing the sample size will…

A: Given:- In a sampling technique, a considerable amount of bias is introduced.  Increasing the sample…

Q: A researcher plans to conduct a survey. If the population on High City is 1,000,000 find the sample…

A: To calculate the sample size (n) given the population size (N) and a margin of error (e), we use…

Q: What is sample size?

A: In this case, we need to define the sample size.

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: There are 30 boys and 20 girls in a class. If a teacher selects a sample of boys and girls as per…

A: Stratified Random Sampling: The population consists of N units which is divided into k relatively…

Q: A student wants to conduct a research in his school. If the school has a total number of4,800…

A: 1) Population size N=4800 Margin of error E=0.05   Slovin's Formula for sample…

Q: What are the practical Reasons for learning how to use the formula in determining sample size?

A: The two major factors affecting the power of a study are the sample size and the effect size A…

Q: Obtain the standard error of difference of sample proportions.

A: ANSWER: For the given data,

Q: To estimate the population mean µ with a 85% error margin of 2.5 units, 10) one has determined that…

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Q: Explain about Sample Size and Margin of Error.

A: Margin of error: The margin of error helps in constructing confidence intervals, which gives a range…

Q: A researcher plans to conduct a survey. There are 15,400 students as target respondents, however due…

A:

Q: What is the standard error of the sample mean if your sample size is 36? Give your answer to 2…

A: It is given that  Population standard deviation, σ = 4.8 Sample mean, x̅ = 25.9 Sample standard…

Q: A researcher plan to conduct a survey about how capable the students are in conducting research. If…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…