Out of a survey of 3200 people who own a hot tub, only 70% use it at least once each week. This was a survey of Americans in the Continental United States ages 18 – 58. The margin of error for this survey was ±1.7%. Calculate the confidence interval for those who use their hot tub once a week.  From  % to  %

Q: A student polls his school to see if students in the school district are for or against the new…

A: Given: Sample size (n) = 366 Number of students who are against the new legislation (x) = 287

Q: Suppose a 95% confidence interval for a population proportion is found using the theory-based…

A: given data  95% ci for p  using theory based method. what it contains defenately from given options?…

Q: Given 25 confidence intervals in the figure to the left, which of the following is the most likely…

A: The confidence interval is an inference process which gives the range of plausible values of…

Q: If n- 22, - 44, and s 12, construct a confidence interval at a 95% confidence level. Assume the data…

A: Solution We solve it by using excel

Q: Find a 99% confidence interval for the population mean for the data set (120, 80, 83, 115, 95, 90,…

A: Solution-:

Q: If n=30, (x-bar)=38, and s=8, construct a confidence interval at a 90% confidence level. Assume the…

A:

Q: mpling process is repeated many time sers who use this social media platfor

A: Option b) is correct.   The estimate is given by p^ =0.458 + 0.5282 = 0.52

Q: If n = 220,p = 0.4,then what will be the 87.4% confidence interval for the population proportion?

A:

Q: What is the correct conclusion? O A. Since the interval contains the proportion stated in the null…

A: The correct conclusion is: If confidence interval contains value of parameter in null hypothesis…

Q: In a sample of 100,40 said they preferred Pepsi to Coke. A 95% confidence interval for the…

A:

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: If n=31, (x-bar)=49, and s=3, construct a confidence interval at a 80% confidence level. Assume the…

A: Given, Sample size = 31 Sample mean = 49 Sample standard deviation = 3   Since the population…

Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

Q: A June 2009 Harris Interactive poll asked people their opinions about the influence of advertising…

A: The value of z at 98% confidnce level is 2.326, which can be obtained by using the standard normal…

Q: If n = 370 and p=0.31p, construct a 90% confidence interval. This should be rounded to three decimal…

A:

Q: In a sample of 100, 40 said they preferred Pepsi to coke. A 95% confidence interval for the…

A:

Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.

A: Answer - Given, Sample size n = 41,    x  = 36    and s = 9               80% confidence interval…

Q: A history teacher records the SAT scores of all 87 of her students. The data is used to construct a…

A: For calculating the confidence interval, we need to satisfy the following conditions: Independence…

Q: If n=18, ¯x=x¯=34, and ss=15, construct a confidence interval at a 98% confidence level. Assume the…

A:

Q: QUESTION 9 Alfred, Bruce, and Selina each construct a confidence interval from the same sample.…

A: The question is based on the relationship between the confidence level and width of confidence int.…

Q: As the president outlined sweeping new proposals aimed to reduce gun violence, a new CBS News/New…

A: 1. What are the sample and the statistic for the CBS News poll? Sample : 1110 adults nationwide…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: In a survey of 2325 adults, 711 say they believe in UFOs. Construct a 99% confidence interval for…

A: Suppose, p is the population proportion of all adults, who say that they believe in UFOs.

Q: If α = 0.05, then what is the confidence level?

A: Given: α = 0.05   we know that, Confidence level+ α = 1

Q: If n=12, x=47, and s=7, construct a confidence interval at a 98% confidence level. Assume the data…

A: According to the provided information,

Q: If n=27, x=48, and s-6, construct a confidence interval at a 80% confidence level. Assume the data…

A:

Q: If n = 17, ¯xx¯ = 33, and s = 6, construct a confidence interval at a 99% confidence level. Assume…

A: We have, If n = 17, x¯ = 33, and s = 6, alpha=1-0.99= 0.01 Therefore  Degrees of freedom= n-1=16…

Q: Part a and b

A:

Q: If n = 18, = 46, and s = 16, construct a confidence interval at a 90% confidence level. Assume the…

A:

Q: Which of the following confidence intervals would have a wider width for the same set of data? A 90%…

A: We have to find which of the following confidence intervals would have a wider width for the same…

Q: If n 28, = 37, and s = 6.2, construct a confidence interval at a 97% confidence level. Assume the…

A: Solution: The following information is given to us: s=6.2 n =28 A 97% confidence interval is…

Q: USE THE INFORMATION BELOW TO ANSWER QUESTIONS 4 THRU 6 In 2020 researchers took random samples to…

A: Givenconfidence interval is (0.013 , 0.049)conficence level = 96%

Q: If n = 41, ã=30, and s = 6, construct a confidence interval at a 80% confidence level.

A: It is given that Sample size n = 41 Sample mean = 30 Sample SD s = 6 The critical value of t at df =…

Q: Questions 7-11. An online poll of 810 adults found that 53% of the respondents think critical…

A:

Q: If the alpha level is .05, then the confidence level is ?

A: Given: alpha = 0.05 confidence level / significant level = 1 - alpha

Q: 1. Online News In a Harris poll of 2036 adults, 40% said that they prefer to get their news online.…

A: Given that the sample size is n=2036 and sample proportion, p^=0.40. Confidence level=95%…

Q: In a survey of 3332 adults aged 57 through 85​ years, it was found that 80.7​% of them used at least…

A:

Q: A smart phone manufacturer is interested in constructing a 99% confidence interval for the…

A:

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.