An entertainment company surveyed 360 elementary school children and found that 153 of them were above grade-level readers. Find the standard error for the sample proportion of elementary school children who were above grade-level readers.

Q: If you want a poll to have a margin of error of 2.84%, how large will your sample have to be?

A:

Q: What is the difference between a sample and a census

A: Sample In statistics and quantitative research methodology, a sample is a set of individuals or…

Q: Out of 300 students in the school, 225 passed an exam. What would be the mean of the sampling…

A:

Q: In a sample of 550 students, 80% prefer online resources versus printed materials. The standard…

A:

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the…

A: From the given information, The sample size is 100 viewers. Among 100 viewers, 36% indicated that…

Q: Why is a sample proportion generally used to estimate a population proportion instead of obtaining…

A: Population proportion: The proportion that is calculated from the population which has a specific…

Q: How is a sample related to a​ population?

A: Population is set of all elements about which we want to know. While the sample is a part of such…

Q: The sample for the survey is ...

A: Here determine sample from which identify no o people support Lafeyette leopard team

Q: Based on the sample, predict the number of adults in Palm City whose main source of news is…

A: In sample, number of adults whose main source of news is newspaper, X = 54 Sample size n =…

Q: how does the sample and population relate?

A: Sample and population both are different items, but both are related with each other. Population is…

Q: Consider the sample data: 125, 115, 112, 127, 112, 105.

A: Data set: 125, 115, 112, 127, 112, 105

Q: the sample mean is the best estimate for population mean true or false

A: We have given that  the sample mean is the best estimate for population mean.

Q: Choose the best answer for the statistical conclusion.

A: Given information: The data represents the turnaround time for 4 types of contractors and 3 types of…

Q: Explain the Representative Sample from a Population in Which the Variables Are Related?

A: The population is the area of interest for which, one want to inquire the characteristics or trend.…

Q: In sampling, explain why obtaining a representative sample is important.

A: Representative sampling is important in sampling technique.

Q: What is Sample?

A:

Q: We would like to determine the average height of the overall student body at Michigan State…

A: Yes, It is necessary to take a sample from the overall student body.

Q: estimate the sample size

A: An estimate of sample size: The appropriate sample size for estimating the mean of a variable from…

Q: Explains the concept of bias, related to the mean, mode, and median.

A: Step 1: Statistical bias refers to the difference between the expected value and the true value of…

Q: Explain the sample mean of the difference scores varies.

A:

Q: What is the value of the standard score for the sample proportion?

A: If mean if the proportion us P And standard deviation is √(pq/n) Then standard score or Z score for…

Q: When calculating the sample size for a research study, a researcher should always round the final…

A: The statement is true.

Q: If we wanted a random sample of students in a cafeteria, why couldn't we just take the students who…

A: Answer: Here random word itself says that we couldn't just take the students who order coke with…

Q: For the survey method to be valid, a representative sample of peoplemust be polled. T or F?

A: The survey methodology essentially involves the study of individuals (or a specified group of finite…

Q: Consider the sample data: 125, 100, 112, 127, 112, 105. What is the sample mean of the data?

A: Given data set: 125, 100, 112, 127, 112, 105

Q: Is the sample mean always the most frequently occurring value? If so, explain why. If not, give an…

A: No, Sample Mean is not the most frequent Occuring Value.   Mean= Sum of Observations / No.of…

Q: Descriptive statistics is another way of drawing a conclusion which helps us determine whether the…

A: Descriptive statistics: Descriptive statistics is a part of statistics where the data is summarize…

Q: A researcher used the sample median as a measure of center instead of the sample mean. What do you…

A: Three central tendencies are given as: Mean Median Mode We use these measures of central…

Q: Describe the sampling distribution for the sample means

A: Given, n=100 μ=55 σ=20

Q: If 471 households were surveyed out of which 385 households have internet fiber cable, what is the…

A: Among 471 households 385 households have internet fiber cable, therefore 471-385 = 86 households…

Q: Explain why the margin of error determines the accuracy with which a sample mean estimates a…

A:

Q: describe why it is important for the sample in your study to be as representative as the source

A: Representative samples are important as they ensure that all relevant types of people are included…

Q: How do you find the stardard deivation for a sample proportion?

A: The sample proportion is p, suppose.  Find q which is equal to 1-p Finf the sample size = n

Q: What is the difference between a score/category’s frequency and its relative frequency (proportion)?

A:

Q: If you calculate the mean for a sample, this would be considered a sample

A: Mean is a part of measures of central tendency. Calculating mean of the sample also means…

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A:

Q: doesn't the mean of a sample population equal the true proportion?

A: Yes, the sample population is equal to true proportion.

Q: Someone claims that, since the mean of the sampling distribution equals the population mean, any…

A:

Q: Explain the four different types of sampling and give an example of each.

A: Different types of sampling methods with examples.Types of random samplings(1) Simple random…

Q: How do the median number of video games owned compare for boys and girls?

A: We have to find median number of video games owned compare for boys and girls.

Q: Explain the relationships among the sample proportion, the number of successes in the sample, and…

A: Sample proportion: The fraction of number of members sampled which have a specified attribute and…

Q: State the mean and variance of the sampling distribution of the mean?

A:

Q: Consider the sample data: 125, 115, 112, 127, 112, 105. What is the sample mean of the data?

A: Given data is ; sample data : 125 , 115 , 112 , 127 , 112 , 105 sample size ( n ) = 6 Definition of…

Q: many males are in the sample?

A: A survey of 500 people is shown in a tree diagram M-male F-female E-eat breakfast D-does do not eat…

Q: If a survey of a movie shows that 50% of all people who like the movie, enjoyed the official movie…

A: Introduction: Population of interest: The population of interest includes all the individuals of…

Q: It is analogous to consider the sample mean as the center of the balance point of our data True…

A: It is known that mean is center of balance for the data. Also, the sample mean is a measure of…

Q: What does the margin of error for the estimate of a population proportion tell you?

A: The formula for margin of error can be written as:

Q: What is the sample proportion

A: Claim: More than half of the population believes that passwords should be replaced with biometric…

Q: Explain what it means that a sample must be representative of the population.

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

Q: What is the relative frequency of respondents who are in favor of the bill?

A: The relative frequency is the ratio of the number of favorable outcomes to the total number of…

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.