An interactive poll found that 319 of 2,298 adults aged 18 or older have at least one tattoo. ​(a) Obtain a point estimate for the proportion of adults who have at least one tattoo. ​(b) Construct a 95​% confidence interval for the proportion of adults with at least one tattoo.   ​(a)  p̂ = 0.139 ? ​(Round to three decimal places as​ needed.)   ​(b) Construct the 95​% confidence interval. Select the correct choice below​ and, if​ necessary, fill in the answer boxes to complete your choice.   A. Lower​ bound: _________ Upper​ bound: ____________ ​(Round to three decimal places as​ needed.)   B. The requirements for constructing a confidence interval are not satisfied

Q: recent survey showed that among 725 randomly selected subjects who completed 4 years of college, 139…

A: Given that  n = 725 , Smoke = 139 , Not smoke = 586

Q: Out of a sample of 600 adults aged 18 to 30, 162 still lived with their parents. Based on this,…

A:

Q: A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1215 males​…

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…

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A: Confidence interval : Confidence interval is a range of values it contains the true population…

Q: According to a Harris Interactive survey of 2401 adults conducted in April 2009, 25% of adults do…

A:

Q: survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1241 males​ surveyed,…

A: We have given that,n1=1241,x1=186,n2=1093,x2=129

Q: In a survey of 749 lesbian, gay, bisexual, or transgender adults in a certain country, 391 said that…

A: In this case, the sample size (n) is the total number of lesbian, gay, bisexual, or transgender…

Q: We surveyed 53 people in an attempt to determine the proportion of Americans who lease a vehicle. 13…

A: The proportion of sample Americans who lease a vehicle is, Thus, the proportion of sample Americans…

Q: survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1211 males​surveyed,…

A: We have to create 99% confidence interval for difference in proportion and we have to find if…

Q: We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 500…

A: The sample proportion of the sample of size n can be defined as:  Here, X = Total number of success…

Q: A medical director needs to know the proportion of patients who have a single bed in their room. A…

A: It is given that sample size (n) is 200 and p-hat value is 0.59.

Q: Out of 240 sample students surveyed, 187 students are planning to take classes during the…

A: We have given that the sample size n=240 and favourable cases X=187. Sample proportion p^ = X/n.

Q: A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1227 males​…

A:

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1223 males surveyed,…

A: From the given information, 1223 males surveyed, 188 responded that they had at least one tattoo.…

Q: In a survey of 2282​ adults, 749 say they believe in UFOs. Construct a 90% confidence interval for…

A:

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: 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: A department chair wanted to know whose students performed better on a common pass/fail final exam:…

A: p1 :  proportion of students passed in smith's  class p2 :  proportion of students passed in Jones's…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 500…

A:

Q: What is the value of Z for this confidence interval?

A: Given,sample size(n)=14795no.of people who said yes=2219no.of people who said no =12576

Q: In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: According to the given information in this question We need to find the 90% confidence interval of…

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1244 males surveyed,…

A: Confidence interval give a range of plausible values for unknown parameters of population. The width…

Q: A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1238 males​…

A:

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1232 males surveyed,…

A: Given that: Total number of males surveyed, n1=1232 Number of male respondent with at least one…

Q: In a survey of 1072 adults, a poll asked, "Are you worried or not worried about having enough money…

A:

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month.…

A:

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1233 males surveyed,…

A: We have given that,  For males :- X1 = 183 and n1 = 1233 For females:- X2 = 139 and n2 = 1042 Then,…

Q: What proportion of college students earn their undergraduate degrees in four years? A college…

A: The formula of the margin of error when the limits given are,

Q: In a survey of 2285 adults, 734 say they believe in UFOS. Construct a 95% confidence interval for…

A:

Q: In a survey of 2336 adults, 735 say they believe in UFOS. Construct a 90% confidence interval for…

A: Given that,In a survey of 2336 adults, 735 say they believe in UFOs.

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

A: Solution

Q: An interactive poll found that 312 of 2,282 adults aged 18 or older have at least one tattoo. (a)…

A: In the poll it is found that 312 of 2282 adults aged 18 or older have at least one tatto.

Q: A marketing research company is estimating which of two soft drinks college students prefer. A…

A:

Q: In a survey of 2319 ​adults, 704 say they believe in UFOs.   Construct a 90% confidence interval for…

A:

Q: In a survey of 4069 adults, 737 oppose allowing transgender to use the bathrooms of the opposite…

A: Given n=4069 X=737

Q: In a survey of 658 lesbian, gay, bisexual, or transgender adults in a certain country, 427 said that…

A: A 90% confidence interval for the population proportion is (0.618, 0.680). Interpretation: We are…

Q: An internet service provider sampled 540 customers and found that 55 of them experienced an…

A:

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1227 males​…

A:

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1228 males surveyed,…

A: Male with tattoos Sample size, n1=1228 Had at least one tattoo, x1=176   Female with tattoos Sample…

Q: Find 90% confidence interval for the true proportion of all medical students who plan to work in a…

A: Given : Sample Size, n = 300 Number of successes, x = 30

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.