1. A department store has determined that 20% of its customers are very satisfied. What is the minimum sample size required to approximate the sampling distribution of the sample proportion with a normal distribution? 7 35 25 20

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.42.…

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Q: Illustrate the relationship between the sampling distribution of p and the normal distribution?

A: It is known that, the conservative law of thumb for the sampling distribution of sample proportion…

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: Suppose the true proportion of voters in the county who support a restaurant tax is 0.64. Consider…

A: We have given that  The true proportion of voters in the county who support a restaurant tax is…

Q: 3. A study conducted by the Center for Disease Control that asked 15,000 students about their sleep…

A: The number of students are n=15000. The proportion of high school students who do not get 8 hours of…

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.42.…

A: Given: The proportion of voters in the country who support a specific candidate is p^=0.42. The…

Q: According to a survey in a​ country, 33​% of adults do not own a credit card. Suppose a simple…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Calculate and report the standard error for the sampling distribution of (the difference between two…

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

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Q: 1. Using the stratified sampling technique, compute for the sample size at a 5% margin of error for…

A: Given : Hospital Population A 560 B 284 C 790 D 1000 E 366 Total 3000 Margin of…

Q: (a) What would the sampling distribution of the sample mean for a random sample of size n=2 years…

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Q: 5. How is the sampling distribution of the statistic x displayed?

A: We have to show how the sampling distribution of chi square displayed.

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

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Q: How do you prove that the normal sampling distribution assumption has been met for a One Proportion…

A: Assumptions: The assumption for using the normal sampling distribution to test a proportion p with…

Q: Suppose the true proportion of voters in the county who support a school levy is 0.49. Consider the…

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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: Compute the mean of the sampling distribution of differences in the proportions insured.

A: Here use basic of sampling distribution of proportion difference

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

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

A: Given data, p=0.65 n=122

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given information: The sample proportion of students who receive some sort of financial aid is p =…

Q: 9. Under what circumstances will the distribution of sample means be normal?

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Q: What happens to the sample size when you don’t know a prior sample proportion?

A: To calculate the sample size when we do not know prior sample proportion.

Q: or a sampling distribution of p with sample size n, taken out of a population of size N

A: Given that  Sampling distribution of p^ Sample size = (n)  Taken out from the population of size N.…

Q: Suppose the true proportion of voters in the county who support a restaurant tax is 0.4. Consider…

A: Here distribution is binomial with p= 0.4

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.57.…

A: The mean is calculated by averaging all the observations. It is eventually calculated by summing all…

Q: A population consists of N=5, as follows: 4, 8, 12, 16, 20. Construct a Sampling Distribution of the…

A: Let all the possible samples of size 3 be drawn from the population of size five be drawn without…

Q: What is the shape of the sampling distribution of r? Normal Bimodal Skewed

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Q: Consider the population consisting of 5,10,15,20,25,30. Samples of size 4 is drawn. What is the mean…

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Q: Suppose the true proportion of voters in the county who support a new fire district is 0.35.…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: d. How would the sampling distribution of i change if the sample size n were doubled from 100 to…

A: how would the sampling distribution of x bar change if the sample size n were doubled from 100 to…

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…

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Q: Suppose the true proportion of voters in the county who support a school levy is 0.39. Consider the…

A: Sample proportion is defined as the ratio of number of units that are favourable to a characteristic…

Q: when doing planned comparisons ? A. a different sampling distribution is used to correct for the…

A: Type-I error: Type-I error is rejecting the null hypothesis H0, when the null hypothesis H0 is true.…

Q: 3) The proportion of eligible voters in the next election who will vote for the incumbent is assumed…

A: Given that, n = 500, p = 0.55 (a) The Standard error of the sampling distribution of sampling…

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

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Q: 1. True or False The sampling distribution of the mean will have the same mean as the original…

A: We have to find out given probabiity..

Q: You are told 20% of plain M&M’s are green. In a random sample of 500 plain M&M’s you find that 123…

A: Given Information: 20% of plain M&M’s are green. i.e., p=0.20 Sample size n=500 plain M&M's…

Q: 5. How is the sampling distribution of the statistic displayed?

A: We have to find that  The sampling distribution of chi square Statistic :

Q: Consider all samples of size 2 from this population. 9 8 10 12 14 15 1. Lists all samples and…

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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: 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: Suppose the true proportion of voters in the county who support a school levy is 0.53. Consider the…

A: Given : p₀ = 0.53 , n= 101

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.52.…

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Q: Suppose the true proportion of voters in the county who support a new fire district is 0.54.…

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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…

Q: Suppose the percentage of married couples who own a home is 33% for a given population. What is the…

A: From the provided information, The percentage of married couples who own a home is 33% (p) = 0.33…

Q: If we take samples of size 110 from a population with proportion 0.39, comment on whether the…

A: Solution: 9. From the given information, n=110 and p=0.39.