survey conducted on a certain website indicated that 44.7% of the people visiting this website consider the color red rather irritating and want the website to use it as little as possible. The survey had a margin of error of  4.8% with a 95% confidence level. What does this margin of error tell you about the percentage of people visiting this website who do not like the color red? We can be 95% confident that somewhere between  ? % and ? % of the visitors of this website do not like the color red.

Q: According to a poll, 81% of California adults (409 out of 506 surveyed) feel that education is one…

A: Point estimate=0.81

Q: The student government association at a university wants to estimate the percentage of the student…

A: As per guideline expert have to answer first question only.

Q: A survey of 540 depressed shoppers found at 32% of them shop on impulse. What is the 99% confidence…

A: Given : Sample Size, n = 540 confidence level,c=0.99 Significance level, α…

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: You sample 100 people to see if they have been to the grocery store in the past week, and find that…

A: Obtain the 95% confidence interval for the true population proportion. The 95% confidence interval…

Q: Students at a certain college were asked if they have a car. After surveying 823 students, it was…

A: We know that a margin of error tells us how many percentage points our results will differ from the…

Q: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Given Data: x=722 n=1762   p^=7221762=0.4098

Q: A  95% confidence interval for the  proportion of voters who say "they want change" is computed and…

A: From the provided information, Confidence level = 95% Confidence interval for the proportion is…

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In poll,…

A:

Q: 1. A survey of 224 children of ages 9 to 17 was conducted shortly after 1986 space-shuttle disaster.…

A:

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: A surprising number of young adults (ages 19 to 25) still live in their parents' homes. A random…

A: Sample taken for ages 19 to 25 2253 men and 2629 women random sample In which 986 men and 923 women…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

A:

Q: m what their favorite color was. 23 people said their favorite color is blue. Using this sample,…

A: Sample proportion is the fraction of successful samples and total number of samples. Here,  Total…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28

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

A:

Q: People love living in California for many reasons, but traffic isn’t one of them. Based on a random…

A: For the given study, let x be the random variable representing the travel time to work for people…

Q: sample of 624 applicants to the Durmstrang Institute of Sorcery, 133 were accepted. Construct a 90%…

A: Given that  X=133 , n=624 , p=20%=0.20

Q: A research group asked 4488 Americans how they fall asleep, and 536 of them fall asleep on their…

A: Obtain the 90% confidence interval for the percentage of all Americans who fall asleep on their…

Q: According to a survey conducted by Pew Research Center in June 2009, 44% of people aged 18 to 29…

A:

Q: in a survey of 2230 adults, 57% thinks that land travel through a tourist bus is much more reliable…

A: Given,sample size(n)=2230sample proportion(p^)=0.57α=1-0.95=0.05α2=0.025Z0.025=1.96       (from…

Q: A recent survey suggests that 52% of Americans say dogs are their favorite animals. If 84 people are…

A: As per honor code, we will only answer first question: 1)  p=0.52 n=84, p^=0.42 Use the formula of…

Q: A surprising number of young adults (ages 19 to 25) still live in their parents' homes. A random…

A: Required conditions: n1>30 n2>30 n1*p1^>=10 n1*(1-p1^)>=10 n2*p2>=10 n2*p2^>=10

Q: in a recent poll, 220 people were asked if they liked dogs, and 36% said they did . find the margin…

A:

Q: A survey of 800 women shoppers found that 15% of them shop on impulse.  What is the 95% confidence…

A: n = 800p^ = 0.1595% CI for p = ?

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: A survey of 300 women shoppers found that 17% of them shop on impulse. What is the 80% confidence…

A: From the provided information,A survey of 300 women shoppers found that 17% of them shop on impulse.…

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

A:

Q: A 90% confidence interval for the average salary of all CEOS in the electronics industry was…

A: Confidence interval: It is defined as the range which contains the value of true population…

Q: In a recent poll, 289 people were asked if they liked dogs, and 17% said they did. Find the margin…

A: Let X be the number of people who liked dogs Given: Number of people or sample size (n) = 289…

Q: A surprising number of young adults (ages 19 to 25) still live in their parents' homes. A random…

A:

Q: A newspaper reported the results of a political poll about which candidate likely voters preferred,…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: The margin…

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

A:

Q: Suppose we take a survey of 400 students and ask how much they study per week. The result is an…

A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: A marketing study by Ford Motor Company finds that 320 of the 650 buyers of compact cars were women.…

A: Let the population proportion of women who bought compact cars be P Given:         Sample size n =…

Q: A surprising number of young adults (ages 19 to 25) still live in their parents' homes. A random…

A: Required conditions: n1>30 n2>30 n1*p1^>=10 n1*(1-p1^)>=10 n2*p2>=10 n2*p2^>=10

Q: 4) Out of the 440 people surveyed, a 110 said they listen to Spotify at least one a month. With the…

A:

Q: In a recent poll, 430 people were asked if they liked dogs, and 54% said they did. Find the margin…

A: In a recent poll, 430 people were asked if they liked dogs, and 54% said they did. Find the margin…

Q: Students at a certain college were asked if they have a car. After surveying 601 students, it was…

A:

Q: Explicate a null and alternative hypothesis in words and symbol and tell whether the test is…

A: Given: A librarian of school claims that all grade 7 students read an average 15 books a month. A…

Q: Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine”…

A: We have given that,  Sample size (n) = 800 and Favorable cases (X) =448 Then,  We will find the 99%…

Q: A recent survey of 349 people ages 18 to 29 found that 86% of them own a smartphone. Find the 99%…

A: The 99% confidence interval of the population proportion is obtained below as follows:   The formula…

Q: A poll commissioned by the Center on Addiction and Substance Abuse at Columbia University found that…

A: Given that, X = 1340 N = 2000 98% confidence level

Q: You are trying to figure out if there is interest in a new restaurant opening in town. You speak to…

A: Solution: 26. Let X be the number of people that would visit the new restaurant and n be the sample…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.