forest perserve. To do this, they capture a sample of 300 squirrels from randomly selected sites in the forest; the squirrels are tagged and released. The following week, they catch another sample of 300 squirrels, and observe that the sample contains 18 tagged squirrels. Please estimate the total number of squirrels in the forst preserve

Q: The city of Raleigh has 8800 registered voters. There are two candidates for city council in an…

A: Given Data Sample Size, n = 8800 Number of successes, x = 111

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Given: Total number of suspected criminals n= 1604 Number of peoples who are not captured = 1011…

Q: Nationally, 80 percent of adults own an automobile. You are interested in whether the same…

A: In the given condition, we are interested in examining the proportion of owning a car with the…

Q: The city of Raleigh has 6800 registered voters. There are two candidates for city council in an…

A: Given : telephone poll of 500 randomly selected registered voters was conducted. 208 said they'd…

Q: In a poll of 2900 adults in a certain country, 1595 of the adults believed that the Olympics should…

A: Let the number of students who believe to be restricted to be x

Q: A politician and her campaign need to survey the residents of a state for an upcoming imary. How…

A: Given that the confidence level is 99%. Margin of error(ME)=3.3%=0.033 The significance level is 1%.…

Q: uster ratified in-k systematic ampling plan is 1-in-k systematic, identify k. (Enter NONE if the…

A: Cluster sampling: In this method of sampling, the total population is divided into some recognizable…

Q: The city of Raleigh has 9400 registered voters. There are two candidates for city council in an…

A: Given that, x=178,n=550 The sample statistic for the proportion of voters surveyed who said they'd…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: It is given that margin of error (E) is 0.09 and the confidence level is 0.90.

Q: The city of Wonderland has 12000 registered voters. There are two candidates for city council in an…

A:

Q: dates for city council in an upcoming election: Brown and Feliz. The day before the election, a…

A: Given:n=sample size=350x=110 The formula and calculations for sample proportion is:p^=xn  =110350…

Q: Horace Horsecollar is interested in the opinion of vacationers at Disney World.  He creates a short…

A: We know that in Systematic sampling method, we choose the first unit randomly and all the other…

Q: When studying wildlife populations, biologists sometimes use a technique called “mark-recapture.”…

A: Consider x as the total population. The proportion can be written as, 580=30x

Q: The city of Raleigh has 7200 registered voters. There are two candidates for city council in an…

A: It is given that, a day before the election, a telephone poll of 200 randomly selected registered…

Q: Give the sample statistic for the proportion of voters surveyed who said they'd vote for Brown

A:

Q: find the sample proportion with n=1,120 and x=616

A: The random variable X is normally distributed. X ~ B (n, p) The sample size is 1120. The number of…

Q: se Brianna's sample to estimate the number of red gumballs in the jar.

A: Given that  Class jar containing 200 gumballs of two different colors  (Red and green) Brianna draws…

Q: The city of Raleigh has 7600 registered voters. There are two candidates for city council in an…

A: It is given that out of the 250 voters 118 said that they would vote for Brown. The proportion of…

Q: In the spring, biologists caught 200 wolves in a wilderness area. These animals were measured,…

A: according to question, out of 20 wolves caught , 8 had tags let out of x wolves caught , 200 had…

Q: The city of Raleigh has 11700 registered voters. There are two candidates for city council in an…

A: Given Information: The city of Raleigh has 11700 registered voters. Sample size (n) = 500 216 said…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: The margin of error (E) is 0.03 and the confidence level is 0.95.

Q: 35% of a sample of employees are vaccinated.if 390 are not vaccinated, how many are vaccinated

A:

Q: A political scientist surveys 23 of the current 96 representatives in a state's legislature. What…

A: Solution: Sample is the subset of population. Population is the entire set of units under study.

Q: A political scientist surveys 38 of the current 146 representatives in a state's legislature. What…

A: Size of the sample (n) = 38 Size of the population (N) = 146

Q: A researcher is interested in maximum-security inmates. She groups inmates by the type of crime…

A: Here, the stratified random sampling method was used. Because the whole population was divided into…

Q: A researcher divides 200 students according to their major. Then she randomly selects three majors…

A: The used sampling scheme is that first the students divided into groups then random select 3 groups.

Q: Four municipalities share in the administration of an airport. The populations are 45 000, 19 000,…

A:

Q: For the folloowing scenarios, list the sampling techniques.…

A: The objective is to identify the sampling technique for each of the following scenarios:

Q: In a village actually involved by anthrax, 70% of the goats were attacked, 85% have been inoculated…

A:

Q: You want to determine how many senior citizens in nursing homes suffer from chronic diseases. First,…

A: Given: Suppose you wish to know how many elderly people in nursing homes have chronic conditions.…

Q: Jennifer is interested in conducting a study in the amount of money people spend at her local…

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

Q: In a survey of 331 registered voters, 158 of them wished to see mayor waffleskate lose her next…

A: We have to find point estimate for proportion.

Q: A public opinion poll in Ohio wants to determine whether registered voters in the state approve of a…

A: A public opinion poll in Ohio wants to determine whether registered voters in the state approve of a…

Q: The 2010 census led to the loss of two house seats in New York and Ohio, the loss f one House seat…

A:

Q: Sampling 4 pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24…

A: Given information: The measured weights of a random sample of two small boxes are given. The results…

Q: A school principal surveys all students in four classrooms and asks them about lunch. Which…

A: Here the population is all students in the four classrooms. Given all the students in four…

Q: The city of Raleigh has 10200 registered voters. There are two candidates for city council in an…

A: Give the sample statistic for the proportion of voters surveyed who said they'd vote for Brown. This…

Q: 2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a…

A:

Q: An online university wants to invest in a new tutoring program. Before they make the commitment, the…

A: An online university wants to invest in a new tutoring program The research team wants to know how…

Q: 6. A large jar contains an unknown number of red gumballs and 150 green gumballs. As part of a…

A:

Q: Cell Phone Claim: Fewer than 95% of adults have a cell phone. In a Marist poll of 1128 adults, 87%…

A: The hypotheses are given below: Null hypothesis: H0:p=0.95. Alternative hypothesis: H1:p<0.95.…

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: The ascending order of the data set is: 17, 21, 24, 26, 29, 33, 36, 36 Here, n = 8. In the given…

Q: Anews service conducted a survey of 1049 adults ages 18 years or older in a certain country. August…

A: Given, The results of a survey, On the basis of the results, we need to say the research objective,…

Q: george wants  to reserach how many people cheat on their  yearly taxes . He  asks 10 people at his…

A: Answer: Yes, it is a bad sampling strategy.

Q: Suppose that a polling organization surveys n = 400 people about whether they think the federal…

A: Let p is  defined as the population proportion of people say that the government should provide aid…

Q: Huck Finn is interested in the average length of catfish in the Mississippi river bordering St.…

A: Given, Huck Finn is interested in the average length of catfish in the Mississippi river bordering…

Q: The city of Raleigh has 10500 registered voters. There are two candidates for city council in an…

A:

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Introduction :-  Using the data, we have to estimate the proportion of people who were caught after…

Q: the local sporting goods store has a promotion where every 1000th customer gets a $10 gift card.…

A:

Q: Suppose you have a job as a political poll person, approximately 130 million people voted in the…

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

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.