A random sample of 600 adults in Flagstaff found 90 adults who had lost a job in the past year. Find a 95% confidence interval for the true percent of adults in Flagstaff who have lost a job in the past year. Express your results to the nearest hundredth of a percent.. Answer: to %

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: GIVEN DATA,  n=971x=554P^=Xn=554971=0.5705CI=0.99α=1-0.99=0.01we have to find out the confidence…

Q: Of 500 random people surveyed, 72 were smokers.  Find the 95% confidence interval. SE=0.0157

A:

Q: People were polled on how many books they read the previous year. How many subjects are needed to…

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Q: Use the given confidence interval to find the margin of error and the sample mean. .734, .760

A: From the given information, the confidence interval is (0.734, 0.760). It can be expressed in,

Q: B. DEGREE OF CONFIDENCE AND MARGIN OF ERROR 1. Find the margin of eTor if the confidence…

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Q: In a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death…

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Q: 95% confidence interval for the true percent of workers in this city who have full health insurance…

A: The question is about confidence interval.Given :Randomly selected no. of workers ( n ) = 1700No. of…

Q: find the z-number associated with a 92% level of confidence. find the z-number associated with a…

A:

Q: find the margin of error of a 99% confidence interval for the mean score of all student

A: It is given that  Sample mean = 93 Sample standard deviation, s = 7 Sample size, n = 30

Q: Use the confidence interval to find the margin of error and the sample mean. (.228, 0.390)

A: We know that the Margin of error = (upper_limit - lower_imit )/2 and Sample mean = (upper limit +…

Q: A professor wanted to know what proportion of college students believe in ghosts. She polled 200…

A:

Q: You are told that your IQ scores falls at the 79th percentile.  What conclusion could you make about…

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A research…

A: n = 990 and x = 564 who said "yes." Use a 99% confidence level  We have to find confidence interval…

Q: researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 520…

A:

Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

A: Confidence level : 90 % = 0.9 value of alpha = 1 - 0.9 = 0.1

Q: The. Nielsen television ratings used a random sample of 2,000 homes and found that 45% of the homes…

A:

Q: Eric randomly surveyed 150 adults from a certain city and asked which team in a contest they were…

A: Given Eric randomly surveyed 150 adults Eric obtained a 95% confidence interval

Q: In one city, 59.6% of the 1500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given, Sample size=n=1500 p^=0.596 α=0.05

Q: A survey of 100 men found that 68% said they find it hard to buy holiday gifts that convey their…

A: Solution

Q: Thirty randomly selected students took the calculus final. If the sample mean was 74.2 and the…

A: From the provided information, Sample size (n) = 30 Sample mean (x̅) = 74.2 Standard deviation (s) =…

Q: How large is the sample if the confidence level is 97%, Ɛ = 2.5%  and ρ = .35?

A:

Q: At the Fredericton High School it is estimated that at most 25% of the students ride bikes to…

A: Let, p = proportion of students who ride bikes to school

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A:

Q: Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the…

A: Level of significance ɑ=0.25

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A:

Q: . A survey of folk music fans yields this 95% confidence interval estimate of the proportion of fans…

A: The 95% confidence interval for proportion of fans who love music of David Wilcox is 0.74 to 0.86

Q: Find  z for a  90% confidence level. Round your answer to two decimal places.

A: Given confidence level is 90% Significance level is 10%

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 wants to determine whether there is an association between weight and scores on the…

A: Given: R-value = 0.213 P-value = 0.3

Q: The actual percentage of Americans who support same-sex relations is an example of a(n) a.…

A: Estimation is a process whereby we select a random sample from a population and use a sample…

Q: C2. GSS 2014 and GSS 2018 respondents were asked their opinion on whether homosexuals should have…

A: Given information: GSS 2014 and GSS 2018 respondents were asked their opinion on whether…

Q: America OnLine published a survey question. Among the 2,300 Internet users who responded, 20%…

A: From the given information, America OnLine published a survey question. Among the 2,300 Internet…

Q: For which quartile, 25% observations are greater and 75% are smaller A. Third quartile B. Second…

A: to find For which quartile, 25% observations are greater and 75% are smaller

Q: A survey was conducted that asked 972 people how many books they had read in the past year. Results…

A: From the provided information, Sample size (n) = 972 Sample mean (x̅) = 14.1 Standard deviation (s)…

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…