16) So, Elizabeth is working through school right now and she is planning on being an attorney. She does a little research and she finds that out of 1000 possible attorneys about 56% make it all the way through school. Determine a 95% confidence interval to determine the true proportion of people who finish school. Interpret it in words       17) What is the margin of error for the confidence interval in question #16?

Q: 2. Why do we feel more confident with a 99 percent confidence interval than a 90 percent confidence…

A: It is needed to define the reason for being more confident for a 99% confidence interval than a 90%…

Q: 1. A study in 2010 performed by called people on the phone asked 2251 US adults the question "Do you…

A:

Q: 2. Suppose that you take a random sample of 360 people who voted in the last election in a heavily…

A:

Q: Suppose you want to produce an estimate on the percent of students who return to college after their…

A:

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 400…

A: The objective of this question is to construct a 95% confidence interval for the proportion of adult…

Q: uring an election, Kevin and Britney took a poll of 1,200 voters, and asked what the most…

A:

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,140…

A: given data  n1 = 144140   x1 = 84545p^1 = x1n1 = 84545144140 = 0.5865 n2 = 216298    x2 = 126501p^2…

Q: A political candidate has asked his/her assistant to conduct a poll to determine the percentage of…

A: Given E=0.04 Alpha=0.05

Q: 1. Your colleague collected a sample of data regarding the mean length of a movie and they computed…

A: It has been given that the confidence interval of the mean length of a movie has been computed on a…

Q: rouble locating the Sample proportion and confidence level

A: It is given that n = 2,321 and x = 719.

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 400…

A: Solution: It is given here:

Q: A researcher wanted to check whether the percentage of Canadian adults with obesity has decreased in…

A: Number of Canadian adults in 2005= 75 Number of Canadian adults in 2009 = 120   significance level =…

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,241…

A: given data  n1 = 144241   x1 = 84000p^1 = x1n1 = 84000144241 = 0.5824 n2 = 211725    x2 = 122644 p^2…

Q: A study at Harvard found that 44% of their students binge drink. You are at Princeton doing a…

A:

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: In your sample of 200 individuals, 10 people identified as bisexual. What is the true proportion of…

A:

Q: What formulas are used to find the confidence interval? Researchers comparing the effectiveness of…

A: According to the given information in this questionWe need to construct 95% confidence interval

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: According to the given information, we have Out of 100 adult residents sampled, 88 had kids. 99%…

Q: Suppose that a health expert has claimed that 28% of college students smoke cigarettes. To…

A: Given 95% confidence interval for the percentage of college students who smoke is 19% to 24%. Given…

Q: The national average for the percentage of high school graduates taking the SAT is 49%, but the…

A:

Q: A researcher wants to estimate the actual proportion of citizens of a certain country who feel that…

A:

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Solution

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

A:

Q: A survey was conducted to determine the percentage of high school students who planned to go to…

A: Confidence interval is a range, from that we estimate the true population mean. Confidence interval…

Q: A researcher wanted to compare the percentages of men and women who play the lottery.  They randomly…

A:

Q: What proportion of new drivers fail the written portion of their driver's license examination? You…

A: Given Data: p=196/500=0.392   n=500   z-value corresponding to 95% Confidence level=1.96

Q: The police department wants to reduce the margin of error for their 95% confidence interval. If they…

A: Here Given  The police department wants to reduce the margin of error for their 95% confidence…

Q: wenty years ago, a very famous psychologist specializing in marriage counseling authored a book…

A: Solution: Given information n= 275 Sample size of couples who bought book. X= 217  stayed together…

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

A:

Q: The school's newspaper reported that the proportion of students majoring in business is more than…

A: According to the given information in this question We need to identify the correct option

Q: What would answer be at 99% confidence interval?

A: We have given that,  Sample proportion (p̂) = 64% = 0.64 and sample size (n) = 550 Then,  We will…

Q: Suppose you are with a health agency that wants to estimate what percentage of Ohioans really has…

A: Given that the margin of error is 2%=0.02 Confidence level is 95% Therefore, the significance level…

Q: You want to determine if the proportion of people who will vote for the president next year has…

A:

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.