In a recent poll, 390 people were asked if they liked dogs, and 83% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible

Q: Approximately 10% of students have a composite score below what level

A: If X is the composite score of the students, then we need to search for a x, such that P[X≤x]=0.1.

Q: A college counselor wants to determine if the number of hours spent studying for a test can be used…

A: An explanatory variable is the one which can be changed independently or what you manipulate or…

Q: You are curious about how the mean age of cars compares for students and faculty. You take a random…

A: We have given that a random sample of 25 students and a random sample of 25 faculty members.

Q: find the mean for the number of correct answers

A: A multiple choice test with 17 questions, each question has four possible answers, one of which is…

Q: In a sample of 61 households, one house is worth $2,500,000. Half of the rest are worth $280,000,…

A: A sample of 61 is taken.One house is worth $25,00,000.Half of the rest ( 30 ) are worth $2,80,000All…

Q: (a) Identify the null and alternative hypotheses. (b) Determine if the sample size is large enough…

A: The following information is provided: The sample size is N=631N = 631, the number of favorable…

Q: The lowest mark scored for a certain examination in a statistics class is 11. If the midrange of the…

A: Given that Minimum = 11 Midrange = 29

Q: A survey was conducted that asked 1018 people how many books they had read in the past year. Results…

A: Since population standard deviation is unknown, use t-distribution to find t-critical value. Find…

Q: Gender Yes Girls 537 328 Вoys 532 234 Conduct a test of hypothesis to determine if the two…

A: Given that the total sample of size N=1096 teenage surveyed. The data about the teenagers that uses…

Q: A simple random sample of 28 observations was taken from a large population. The sample mean equaled…

A: It is given that, a simple random sample of 28 observations was taken from a large population with…

Q: You want to estimate the percentage of small incorporated businesses that are owned by women. A…

A: The random variable percentage of small incorporated businesses follows binomial distribution. The…

Q: A survey was conducted that asked 956 people how many books they had read in the past year. Results…

A: From the provided information, Sample size (n) = 956 Sample mean (x̅) = 14.1 Sample standard…

Q: A survey was conducted that asked 1005 people how many books they had read in the past year. Results…

A: Given,sample meaan(x¯)=14.3sample standard deviation(s)=16.6sample size(n)=1005degrees of…

Q: A researcher wanted to estimate the proportion of undergraduate college students (18– 29 years) with…

A:

Q: A researcher wants to do a study to see what the proportion of vaccinated people is in a certain…

A:

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

A:

Q: A magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

A: Given: A magazine provided results from a poll of 200 adults who were asked to identify their…

Q: A survey was administered to 1000 Broward college students. 30% of the respondents indicated that…

A: Let x denotes number of students who prefer online classes over face to face classes and n denotes…

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given: X¯1=77n1=259X¯2=90n2=344X¯3=66n3=171

Q: Use the sample data and confidence level given below.   A research institute poll asked respondents…

A:

Q: nitial BAC was zero. The number (between 1 and 9) of 12 ounce beers to be drunk was assigned to each…

A:

Q: In a psychology class, 40 students have a mean score of 89.5 on a test. Then 24 more students take…

A: Given,n1=40 , x¯1=89.5n2=24 , x¯2=78.3

Q: Most adults would erase all of their personal information online if they could. A software firm…

A: The sample size is 502. The probability of successes is 0.65. We have to find the value of the test…