An educator wants to determine whether a new curriculum significantly improves standardized test scores for fourth grade students. She randomly divides 100 fourth-graders into two groups. Group 1 is taught using the new curriculum, while group 2 is taught using the traditional curriculum. At the end of the school year, both groups are given the standardized test and the mean scores are compared. Determine whether the sampling is dependent or independent. Indicate whether th response variable is qualitative or quantitative. Determine whether the sampling is dependent or independent. O A. The sampling is dependent because the individuals selected for one sample do not dictate which individuals are to be in a second sample. O B. This sampling is independent because the individuals selected for one sample do not dictate which individuals are to be in a second sample. OC. The sampling is dependent because the individuals selected to be in one sample are used to determine the individuals to be in the second sample. OD. The sampling is independent because the individuals selected to be in one sample are used to determine the individuals to be in the second sample.

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

A:

Q: Consider a hypothesis test to decide if the mean hours of sleep achieved is different if hot tea is…

A: Type I Error:  A Type I error occurs when the null hypothesis is rejected when it is actually true.…

Q: The average height of women in the freshman clas at UA has historically been 5'4" with a standard…

A: Consider a random variable X, that defines the height of women in the freshman class at the UA.

Q: According to the national Center for Education Statistics, 20% of students who recently earned…

A: INTRODUCTION :  SAMPLING DISTRIBUTION :              let us have the number of samples from the…

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: Given Datan = 984, x= 494, sample proportion is given by

Q: What are other sampling distributions for mean?

A: Sampling distributions : The probability distribution of a given statistic based on a random sample.…

Q: What are the properties of the Sampling Distribution of x̄?

A: Properties of the sampling distribution of x̅ is If the true population distribution of a random…

Q: As the sample size​ increases, the mean of the sampling distribution: a. gets larger b. stays the…

A: We know that the sample size means the number of units in the sample.  We know that by the central…

Q: Compare the examination of the Normal Distribution curve and of the Sampling Distribution Curve.

A: In probability theory and statistics, a probability distribution is the mathematical function that…

Q: A population of a certain LGBTQ+ community is consist of six (6) measurements 2,3,6,9,11 and 5…

A: Given: population 2 3 6 9 11 5

Q: Although, in general, you cannot know the sampling distribution of the sample mean exactly, by what…

A: Sampling distribution of a sample mean:

Q: What is Classic Variable Sampling?

A: In this case we need to define about the classic variable sampling.

Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of…

A: It is given that the normal death rate for patients with extensive burns has been significantly…

Q: What are the important characteristics of the sampling distribution of the mean?

A: The sampling distribution of the mean generally has normal distribution as the sample size is large…

Q: Assume that the climate conditions on Earth are such that years hotter than the historical average…

A: (1) The following hypothesis can be formed H0: p=0.5 where p is the probability that a hotter year.

Q: When does sampling with replacement and sampling without replacement yield approximately the same…

A: Introduction: Sampling with replacement and sampling without replacement are two ways of conducting…

Q: Write down the properties of Hypothesized Sampling Distribution.

A:

Q: An educator wants to determine whether a new curriculum significantly improves standardized test…

A: Basics: Independent event: The occurrence of one events does not affects the occurrence of the other…

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: Given information n = 997, x= 496, p=0.47

Q: The mean of the sampling distribution of the sample mean is smaller than the mean of the…

A: According to Central limit theorem, when repeated sample of size n is drawn from a population with…

Q: How do you compute for the variance and standard deviation of the sampling distribution of sample…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: The proportion of individuals insured by the All-Driver Automobile Insurance Company who received at…

A: Given that : Size of sample n = 180 proportion of individuals insured who received at least one…

Q: What is the sampling distribution in estimating the variance of a population? What are the…

A: The estimation population variance of the sampling distribution, or

Q: What are the three important characteristics of the sampling distribution of the mean?

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: What are the functions of sampling distribution?

A: A sampling distribution is a distribution of the likelihood of a statistic derived from a greater…

Q: tudents of malaya intregrated high school has a mean of 12.45,what is the mean of the sampling…

A: Given, μ=12.45

Q: What is the sampling distribution of a statistic? Why is it important?

A: Sampling distribution of a statistic:The group of all reliable observation of a statistic for the…

Q: Give me an example of systematic sampling and simple random sample

A: Given : Systematic sampling   Simple random sample

Q: In 2017, a website reported that only 10% of surplus food is being recovered in the food-service and…

A: Introduction: Denote p as the true population proportion of surplus food that is being recovered in…

Q: At a large corporation, 6,000 employees from department A and 4,000 employees from department B are…

A: Concept of sampling distribution of sample proportion: Let a particular characteristic of a…

Q: A doctor believes that 80% of all patients having a particular disease will be fully recovered…

A: From the provided information, A doctor believes that 80% of all patients having a particular…

Q: What does the sampling distribution of the mean allows determining?

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: what is a sampling error?

A: Description of parameter and statistic:A characteristic that describes population is called 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: When does random sampling occur?

A: It is a sampling technique to choose the desired number of samples from the population. The types of…

Q: Class Limits Frequency 86 - 90 6 91 - 95 22 96 - 100 45 101 - 105 22 106 - 110 5 a. Find the mean,…

A:

Q: What is the sampling distribution of x?

A:

Q: The shape of a sampling distribution of sample means will always be bell-shaped. True or false?

A: The sampling distribution of the sample means will be normally distributed only when the sample size…

Q: What is mean of the Sampling Distribution of the Mean?

A:

Q: Calculate the mean and standard deviation of the sampling distribution of p?

A:

Q: A group of researchers wants to study students' adaptation to online learning as the new normal…

A: Given a group of researchers wants to study students adaptation to online learning as the new normal…

Q: The president of Doerman Distributors, Inc. believes that 30% of the firm’s orders come from…

A: The given information is:

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: From the given information, Sample size (n) =985 α = 0.01 Consider, x is a number of Chevrolet .…

Q: the population of abm student of malaya integrated high has a mean of 12.45. what is the mean of the…

A: Given, μ=12.45

Q: As the sample size​ increases, the mean of the sampling distribution ▼   stays the same. gets…

A: We have to find correct answer from given options...

Q: A researcher wants to know if the mean length of stay in for-profit hospitals is different from the…

A: Here , 20 Profit and 20 non-profit hospitals are considered

Q: Distinguish briefly the Random and non-random sampling

A: Solution: Random sampling is also known as probability sampling  and non-random sampling is also…

Q: Estimate the parameter 'p' in the sampling from binonial

A:

Q: what happens to the mean as the sample size increases?

A: It is given that the sample size is increasing.

Q: An educator wants to determine whether a new curriculum significantly improves standardized test…

A: The standardized test scores have been analyzed which are quantitative in nature.

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.