An interactive poll found that 397 of 2,391 adults aged 18 or older have at least one tattoo. A. Construct the 95% confidence interval. Lower bound - Upper bound - B. Construct the 98% confidence interval. Lower Bound- Upper Bound-

An interactive poll found that 397 of 2,391 adults aged 18 or older have at least one tattoo. A. Construct the 95% confidence interval. Lower bound - Upper bound - B. Construct the 98% confidence interval. Lower Bound- Upper Bound-

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: You're considering going to graduate school, and you would like to know how many people would…

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

Q: A local news outlet reported that 56% of 600 randomly sampled Kansas residents planned to set off…

A: We have given that, Sample proportion (p̂) = 56% = 0.56 and sample size (n) = 600 Then, We will…

Q: A board-game club meets each week at the local library. People bring different board games to play,…

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A: It is given that, x is 311 and n is 400.

Q: knowing

A: Given: Total number of drivers = 383 Drivers who buckle up = 297 Proportion of drivers, p =…

Q: A survey of 700 non-fatal accidents showed that 167 involved uninsured drivers. Construct a 99%…

A: Given data,n=700x=167Point estimate isp=xn=167700=0.2386Construct a 99% confidence interval?

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: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given data, n=152 x=101 p=x/n =0.664 The 95% CI is Zc=1.96

Q: a survey of 3447 adults, 1477 say they have started paying bills online in the last year.…

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A: Solution

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

Q: A survey of 400 students at Red Rock College found that 180 planned to take summer classes. Find a…

Q: It is known that ticks in York County carry the Lyme disease. In a representative sample of 200…

A: Let n=sample size, X=number of Carry disease. p^=x/n X=167, n=200

Q: The General Social Survey asked 1294 people whether they performed any volunteer work during the…

Q: In a survey of 1037 US adults ages 65 and over, 643 were concerned about getting the flu. A 99%…

A: Given,n=1037x=643p^=xnp^=6431037=0.6201-p^=1-0.620=0.380α=1-0.99=0.01α2=0.005Z0.005=2.58 (from…

Q: What proportion of the sample reported that they had been cyberbullied?

A: Givensample size(n)=14795No.of respondents say yes they had been cyberbullied(x1) = 2219No.of…

Q: A random variance survey of 495 adults found that 59 had diabetes. which of the following is a 98%…

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: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

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: 5-Seventy percent of 50 randomly selected students from college of science and engineering were…

Q: n a survey, 25 people were asked how much they spent on their child's last birthday gift. The…

A: Givensample size(n)=25Mean(x)=38standard deviation(s)=19confidence interval(c)=98%

Q: A student organization conducted a statistical study to calculate a 95% confidence interval for the…

A: Hence,

Q: A new survey found that out of a random sample of 300 high school students throughout the country…

A: From the provided information, Sample size (n) = 300 83% of them still planned on taking the…

Q: 7 out of 70 students said they were comfortable with “working in a workplace with a lot of…

A: Given that 57 out of 70 students said they were comfortable with “working in a workplace with a lot…

Q: In a random sample of 145 students, we find that 53% have attended a baseball game at some point in…

A: Given,sample size (n)=145sample proportion(p^)=0.53α=1-0.95=0.05α2 =0.025z0.025 =1.96

Q: You receive a brochure from a large university. The brochure indicates that the mean class size for…

A: Sample size is, Population mean is Confidence Level is The objective is to test the claim that the…

Q: A research institute asked students if they felt vulnerable to identity theft. In the poll, n=1047,…

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A: Givenx=316sample size(n)=391Confidence level=95%p^=xn=316391≅0.8082

Q: In a survey of 2013 adults in a recent year, 731 made a New Year's resolution to eat healthier.…

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: You're considering going to graduate school, and you would like to know how many people would…

A: Given: X= 6, N=28. Therefore, P=XN=628=0.214

Q: Insurance companies are interested in knowing the popul drivers who always buckle up before riding…

A: Given data,No of people surveyed n=387who claims to buckle up is x=311Construct a 93 % CI?

Q: n a survey of 3196 adults, 1405 say they have started paying bills online in the last year.…

A: Given data, n=3196 x=1405 p=x/n=1405/3196 =0.4396 z-value at 99% confidence is Zc=2.576

Q: A sociologist develops a test to measure attitudes towards public transportation, and 37 randomly…

A: given that,sample mean, x =58.5standard deviation, s =19.7sample size, n =37standard error = sd/…

Q: ou're considering going to graduate school, and you would like to know how many people would…

A: Given data, n=30 x=7 p=x/n =7/30 =0.23 z-value at 96% confidence is Zc=2.05

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1246 males…

A: The random variable is who had at least one tattoo. There are two independent samples which are…

Question

An interactive poll found that 397 of 2,391 adults aged 18 or older have at least one tattoo.

A. Construct the 95% confidence interval.

Lower bound -

Upper bound -

B. Construct the 98% confidence interval.

Lower Bound-

Upper Bound-

Expert Solution

Step 1

Given data:

Sample size (n) = 2391

x = 397 adults

To construct:

1.95 % confidence interval

2.98% confidence interval

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

Of 260 employees selected randomly from one company, 18.46% of them commute by carpooling. Construct a 98% confidence interval for the true percentage of all employees of the company who carpool. Interpret the results.
Of 848 children surveyed, 144 plan to join a volunteer group in the future. Construct a 90% confidence interval for p.
Out of a survey of 900 adults, 567 said that teenagers were more dangerous drivers than senior citizens. Construct a 99% confidence interval for p.
A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages. Construct a 95% confidence interval for the proportion of adults who have a Facebook page.
The National Association of Colleges and Employers sponsors the Graduating Student and Alumni Survey.Part of the survey gauges student optimism in landing a job after graduation. According to one year’s surveyresults, published in American Demographics, among the 1218 respondents, 733 said that they expecteddifficulty finding a job. Construct a 90% confidence interval for the proportion of students who expecteddifficulty finding a job. Interpret your result.
In a survey of 6000 high school students, 3230 read books during the summer break. Using these sample statistics, find a 99% confidence interval for the proportion p of all high school students that read books during the summer break.
17
Out of a sample of 760 people, 367 own their homes. Construct a 95% confidence interval for the population mean of people in the world that own their homes. A CL
In a survey of 2111 adults in a recent year, 1244 say they have made a New Year's resolution.Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. How exactly do you go about doing this