You want to know what percentage of students own pets at your university. In asking 10 random students in the library every hour for 5 hours, you find that 18 individuals owned pets. What kind of study is this?         The population of this study is  The sample of this study is

Q: The student government at Nassau Community College has been told that the student population…

A: As due to the honor-code, we are authorized to answer only 3 subparts for each question and that you…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: In a survey conducted by a reputable marketing​ agency,257 of 1000 adults 19 years of age or older…

A: Sample: Sample is the subset of the subjects chosen from the whole population. In this study, ‘1000…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: You are the operations for American Airlines and you are considering a higher fare level for…

A: Note:Since, in this question nothing is given about the percentage of passengers who prefer aisle…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given that Confidence level = 0.95 Margin of error E = 1.5 percentage points = 0.015 Estimate of…

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: Target population means, the set of elements that we want to know more about

Q: Matilda recently took a statistics quiz in her math class. In one question, 45 of 900 visitors at a…

A: Matilda's error is  D. 900 visitors represents the population.

Q: Suppose we want to determine the opinion of Business Administration students regarding pre- marital…

A: Given that in a population of size 500, there are 300 females and 200 males.

Q: ​If, in a random sample of 200 items, 65 are​ defective, what is the sample proportion of defective​…

A: x =Number of defective items n = Sample size

Q: The CEO of a company wants to determine if taking the employees to a company retreat would boost…

A: Given that population consist of 250 employees and simple random sample of size 50

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Formula for the sample size needed to estimate a population proportion is

Q: You want to see if violent videos games have any effect on aggression for middle school boys. So,…

A: To find: What kind of hypothesis test do you think would be appropriate for this study?

Q: A superintendant wanted to know how citizens of a district thought about a new initiative.  To study…

A: A) 300 fans

Q: What is the degree of freedom if the sample size is 25. Select the correct response: 25 26 24

A: We have given that,  Sample size (n) = 25 Then,  We will find the degree of freedom (df) = ?

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: Do this! Sample Problem 3. How many people can be seated in 6 square tables lined up straight to…

A: In this question we have to find How many people can be seated in 6 square table lined up straight…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: Jean is planning to take a foreign language class. To research how satisfied other students are with…

A: Jean is planning to take a foreign-language class. To research how satisfied other students are with…

Q: If a researcher were to increase a sample size from n = 30 participants to n = 80 participants, what…

A: Increase power

Q: A circus operator randomly picked 5 day from the month of august to see how many people purchased…

A: Sample is the items randomly drawn from the population.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: Students in a statistics class at Penn State were asked, “About how many minutes do you typically…

A: 1) The assumptions necessary for performing the two-sample t-test, such that the results obtained…

Q: If you want to conduct a study to determine how much people exercise from a certain town, what would…

A: In this scenario, it is appropriate to call randomly selected cell phone numbers of people living in…

Q: You are now the administrator of a local hospital, and your first project is to research the quality…

A: Given information: The data represents the values of number of unsatisfactory foods among the…

Q: . Below are the number of hours spent by teache and 12 students were selected at random to there is…

A: Given, Excel output:

Q: A coach is interested in how many slam dunks the average college seniors at his university can do.…

A: a)  Sample :- Ten volunteers from the senior class of the university

Q: The secretary in a statistics department would like to estimate how much coffee to brew per day such…

A: From the following data we have to calculate mean, standard, and confidence interval

Q: re residents (if any) must I ask, given the fact that (somehow) I know that 62 percent of all…

A: Given: Sample size, n = 32 Probability, p = 62100=0.62 Here the distribution is binomial and for a…

Q: When you are using surveys in research, it is easy to ensure that the population filling out the…

A: Survey Research is defined as the method of conducting research using surveys sent to survey…

Q: In an advanced ballet dance class, it is claimed that 42% of dancers can successfully perform a…

A: Given: Sample size, n=27 No. of dancers can successfully perform a double pirouette turn, x=13

Q: 4a. Suppose that 35% of senior citizens have a social media account. If we survey 150 senior…

A: The question is about sampling distribution Given : Prop. of senior citizens have a social media…

Q: John works as a weld inspector in a shipyard. Because he keeps track of good and poor welds, he…

A:

Q: when you have means from two different samples, it is best to conduct a what test?

A: When there is mean from two different samples, two types of test can be conduced:

Q: A coach is interested in how many slam dunks the average college freshman at his university can do.…

A: Population:Population consists of the complete subjects that are included in the study for making…

Q: Zoe wanted to know how the students at her university might vote in the upcoming election. What…

A: Zoe wanted to know how the students at her university might vote in the upcoming election. We have…

Q: if the 90% Ci for the population mean is (-4.58, 6.54) what is the sample mean O a. can't be found

A: Given data,Lower limit =-4.58Upper limit =6.54Sample mean =?

Q: answer a A. the national percentage of automobile accident fatalities which are alcohol related is…

A:

Q: Given the sample size of n=225, you can work with the -table. Ox? F

A: Given that  According the World Health Organization, the Body Mass Index (BMI=Weight in…

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: Billy has a bag of 30 marbles. He must choose only 6 marbles to bring for show and tell. What is the…

A: Given: The bag contains 30 marbles. He will choose only 6 marbles to bring for show and tell.

Q: You answered this question: What is the Sample Variance for the following numbers: 52, 62, 52, 45,…

A: Given52, 62, 52, 45, 41

Q: It's all about COMBINATION - From a population of 50 households, in how many ways can a researcher…

A: The population is given as 50 and 10 need to be selected. The total number of ways of selecting 10…

Q: If you divide an apartment complex's units according to the number of bedrooms, and then take a…

A: Given : E.g If you divide an apartment complex's units according to the no. of bedrooms , and then…

Q: You and a group of friends want to know how many students in your school prefer pop music. There are…

A: The number of students and the proportion of students who prefer pop music in a survey of 20…

Q: d. There are exactly 6 people in the sample who are NOT afraid of being alone at night.

A: Given : 50% of the Americans are afraid of being alone in a house at night ,  which means Americans…

Q: Please answer the following multiple choice question. View attached image to see the question

A: Identify the true of false for the given data. The correct option is identified below: From the…

Q: n a poll of 1000 randomly selected voters in a local election, 701 voters were against fire…

A: n = 1000 Number of voters = 701

Q: oms. The researcher picks 2 of the 4 classrooms and asks every 1st grader in the 2 classrooms what…

A: A researcher studying allergies to animals is interested in performing a study at the local…

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.