A researcher divided subjects into two groups according to gender and then selected member from each groups for her sample. She used stratified random sampling. False True 6. Data that can be classified according to color are measured on ordinal level. False True

Q: The margin of error increases if the sample size increases. True False

A: Margin of error is given by, MoE= z*sigma/√n  MoE is inversely proportional to n so as we increase…

Q: Suppose a random sample size of 60 is taken from a population with p = 0.51. What is the mean of…

A:

Q: When two births are randomly selected, the sample space for genders is bb, bg, gb, and gg. Assume…

A: it can be clearly seen that the probability of getting a boy or a girl is 0.5 in the given sampling…

Q: When two births are randomly​ selected, the sample space for genders is​ bb, bg,​ gb, and gg. Assume…

A: The given sample space is {(bb), (bg), (gb), (gg)}

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: When two births are randomly​ selected, the sample space for genders is​ bb, bg,​ gb, and gg. Assume…

A:

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: State the hypotheses. That is, the mean annual attendance rates the same for employees in these…

Q: Compute the mean of each sample and the mean of the sample means.

A: The sample mean for each sample can be calculated as Mean = Sum of observations/Sample size.

Q: When sample size increases the cost of survey increases Select one: O True O False ouS ACTIVITY

A: Correct Answer True

Q: What is Random Sampling?

A: Random sampling: A simple random sample of size n is collected from a large population where each…

Q: Suppose we wanted to know the average salary of professors. We first separate all professors  into…

A: Introduction: Convenience sampling: In convenience sampling, the researchers select a sample from…

Q: Find a sample size for which the median will always equal one of the values in the sample.

A: Median: The median is the middle-most observation in an ordered (in an ascending or descending…

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A:

Q: Which one has samples that are the smallest sample size?

A: Given, 3 sampling distributions in the question comes from samples with the same population mean and…

Q: What does the true sampling distribution serves?

A:

Q: a.    If samples of a specific size are selected from a population and the means are computed, what…

A: The answer is explained below-

Q: What is a random sample?

A: Here use definition of random sample

Q: is a sampling considered biased?

A: We know that The sampling method is called biased when it favors some outcomes over the others…

Q: Suppose the average grade point average (GPA) for the undergraduate student population on our campus…

A: The population average grade point is µ = 3.10.

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: The data provided for the number of days worked in a year by N=23 employees from 3 departments is…

Q: Two samples are randomly selected from

A: Failing to reject the Null hypothesis means accepting it and rejecting the alternative hypothesis.

Q: Modern Managed Hospitals (MMH) is a national for-profit chain of hospitals. Management ants to…

A: a) sampling technique is best described by this scenario is systematic sampling because whole…

Q: In a simple random sampling, all samples of a given are equally likely. Is this true in systematic…

A: In a simple random sampling, all the samples are equally likely. Each element in the sample have…

Q: a sample is a smaller subset of the entire population, ideally one that is fairly representative of…

A: This is pharse "a sample is a smaller subset of the entire population, ideally one that is fairly…

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: applying one way ANOVA on above data:   Mean n Std. Dev Variances budgets 257.4 5 11.7388…

Q: If a researcher manipulates one of the variables in a study and tries to determine how the…

A: In an experimental study, the researcher manipulates one of the variables and tries to determine how…

Q: Of the electric bills for a samle of 40 families Electric bill Number of families 2 12-16 14 4-8…

A:

Q: A researcher wishes to determine if there is an association between age and life-contentment. To do…

A: Observational studies are those studies in which the investigator observes and derive conclusions…

Q: Two researchs adopted different sampling techniques while investistigating the same group of student…

A: H0: The sampling techniques adopted by the two researchers are independent. H1: The sampling…

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

A:

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: University officials used the results of the study to try to attract new students by stating that…

A: Answer is explained below

Q: If the sample size is n = 2 and the population variance is o =7.75, what is the variance of the…

A: NOTE-AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION ONLY

Q: Classify the two given samples as independent or dependent. Sample 1: Sample 2: The household…

A: It is given that the sample 1 is the households income for 39 households in a suburb.

Q: Give one situation where each of the sampling methods is being applied. 1. Lottery sampling 2.…

A:

Q: Identify which of these types of sampling is used: random, systematic, convenience, stratified, or…

A: In simple random sampling, each of the unit is population has equal chance of being selected in the…

Q: What does a sampling distribution serves?

A:

Q: A psychology student wants to know the level of satisfaction of the residents on the mental health…

A: Since you have asked multiple questions, we will solve the question for you using Slovin's formula.…

Q: If a researcher uses random sampling, the sample will definitely be representative of the…

A: Solution: The given statement is “If a researcher uses random sampling, the sample will definitely…

Q: The students in an Introductory Statistics class are asked to complete a survey about study habits.…

A: Simple random sampling: A simple random sample of size n is collected from a large population where…

Q: The mean of a sampling distribution is smaller than the mean of the underlying population. True or…

A: We have to find that the given statement is true or false... The mean of a sampling distribution is…

Q: 2. Throughout the state of Kansas, there are approximately 4 potholes per 100 miles of highway. If…

A: Given,The average no.of potholes per 100 miles of highway=4A random variable…

Q: The subscribers to a magazine are numbered. Then, a sample of these people is selected using random…

A: We have given that,  The subscribers to a magazine are numbered. Then, a sample of these people is…

Q: Representativeness of a sample is principally determined by the ?

A: Definition: "Representative sampling" is a sort of statistical sampling that allows us to draw…

Q: In an activity, students are pulling marbles from a large jar containing blue and red marbles. In…

A: We need to identify suitable sample size

Q: if the population mean is 12.45 what is the mean of the sampling distribution of its means?

A: Given : Population mean(μ) =  12.45

Q: A marketing expert for a particular chain of restaurants is planning a survey in which 510 people…

A: Given data a marketing expert for a particular chain of restaurantsis planning a survey in which 510…

Q: In this population data : (2, 4, 6) what is the Standard Error when a sample size of 2 is drawn.

A: Given: population data: 2, 4, 6 n =2

Q: Suppose a researcher conducts a study on the relationship between hours of exercise per week and…

A: Given : The researcher divides the population into men and women and then randomly selects 200 men…