children for a family to have?” A Gallup Poll asked this question of many randomly chosen adults. Slightly less than half (48%) thought that a total of two children was ideal. Consider p = 0.48 as the true proportion of all adults that believe a total of two children was ideal. For an SRS of size n = 1020:   a) What is the sampling distribution of the sample proportion?      b) What is the probability that the sample proportion falls between 0.44 and 0.52?

Q: From a sample of 101 items, 27 are defective. The point estimate of the population proportion…

A:

Q: If a population has a mean of 25, what is the mean of the sampling distributions of its means? a.…

A: Given,

Q: An online news source reports that the proportion of smart phone owners who use a certain operating…

A: Here we need to find the mean of the sampling distribution. Here it is given that the sample size is…

Q: It is known that 40% of all customers at a service station pay with a credit card. If a random…

A: Given  p=0.40, x=75, n=200

Q: medical information​ online?" Of 1072 Internet users who chose to​ respond, 38% of them responded…

A: The term used to describe this type of survey is C. The respondents are a voluntary response…

Q: What is the sampling error for an estimate of the population proportion, p = 0.36, if the true…

A: We have to find the sampling error for an estimate of the population proportion

Q: A variable of a population has a mean of u = 75 and a standard deviation of o = 16. a. Identify the…

A: (a) Determine the shape of the sampling distribution. Since, the sample is greater than 30, the…

Q: In 1941, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: We have given that For the survey taken in 1941 n1 = 1100x1 = 374p̂ = x1/n1 = 151/429 = 0.3520 And…

Q: According to the Bureau of Labor Statistics, 15% of the U.S. workers were government employees. A…

A:

Q: Samuel F.B. Morse (1791 – 1872), the creator of Morse Code, claimed that 12% of all letters used in…

A: The population proportion is 0.12. That is, p=0.12.

Q: If a population has a mean of 2.5, what is the mean of the sampling distribution if the sample size…

A: Introduction: It is required to find the mean of sampling distribution of the mean, when a sample of…

Q: Consider the following: at Bernhardt College, 200 (of the 3,000) students were polled and asked how…

A: From the given information, At Bernhardt College, 200 (of the 3,000) students were polled and asked…

Q: A sociologist wants to know the proportion of adults with children under the age of 18 that eat…

A:

Q: f frequency for class A is 0.22 , quency of the class A ?

A: Solution : Formula : Relative frequency = number of frequency/Total number of frequency

Q: In a simple random sample of size 76, there were 34 individuals in the category of interest. Compute…

A: Given: Sample size (n) = 76 Let x be the number of individuals in the category of interest

Q: The Bata Shoe Museum states that 16% of women wear shoes that are too small for their feet. A…

A: 16% women wear shoes that are too small for their foot. So, proportion of women wear shoes that are…

Q: en reported that 42.6 % of workers employed as purchasing managers are males. In a random sample of…

A: The sample proportion is calculated as: p^=xn=70200=0.35

Q: When working with the sampling distribution of a sample proportion, what do we need to require to…

A: Sampling Distribution of a Proportion There are several ways to calculate the sampling distribution…

Q: A researcher studying the proportion of 8 year old children who can ride a bike, found that 219…

A: Given: n= 567 ,x= 219.0 Need to find sample proportion.

Q: What is meant by the statement that the sample mean has a sampling distribution?

A: The parameters that describe a population, like mean, variance, and standard deviation, are already…

Q: Problem : Which single sampling plan should be used for a lot size of 1000 and an AOQL of 2%h, if…

A:

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.61.…

A: The mean of the sampling distribution of the proportion is given by; μp=p The standard error of the…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Given Data: Margin of Error=0.22 p=0.54   z-value=1.96

Q: ample size always be 4, 5 or 6 -no smaller nd no larger? nswers to Conceptual Questions

A: It is an important part of statistics. It is widely used.

Q: We want to be at least 95% confident that the error is at most 0.06, then the sample size is.. A.…

A: Solution

Q: Given the following frequaney table, the sample mean () is 1 2 3 12 13 15 10 4.

A:

Q: At a high school with over 500 students, a counselor wants to estimate the mean number of hours per…

A: Note that ,  For given random and independent samples of N observations each (taken from a normal…

Q: Suppose we are now interested in taking random samples of 800 US adults instead of 150 and…

A:

Q: In the sampling distribution of the mean, the sample mean is considered to be a random variable.…

A: Yes the sampling distribution of the mean is considered to be a random variable .  As per central…

Q: 1. How many random samples of size 3 can be made? [ Select ] 2. What are the possible sample means…

A: Here sample is drawn without replacement

Q: For a population with an unknown distribution, the form of the sampling distribution of the sample…

A: The objective of the question is to identify the form of the sampling distribution of the sample…

Q: ven the random sample results below showing the percentages of people who support the death penalty,…

A: According to the scenario, the random samples of males and females are given. The samples are of…

Q: To calculate the margin of error of a sample estimate, you must know all but which one of the…

A: The formula to calculate margin of error can be written as:

Q: If the sample size is decreased, then the sampling error will -- a. not change b. Increase c.…

A: The sampling error is sn.