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: In a sample of 310 adults, 285 had children. Construct a 90% confidence interval for the true…

A: From the provided information, Sample size (n) = 310 Confidence level = 90%

Q: The correct value of Z to use for an 80% confidence interval for is: O A. 1.96 О В. 1.28 O C. 2.33 O…

A:

Q: In a study, 132 children of a certain race in a certain city were randomly assigned to one of two…

A: Step 1: Given: For the Preschool group:42 graduated from high school (say x1​)and altogether there…

Q: Situation 2: The running time (in minutes) of sample YouTube videos produced by a particular vlogger…

A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

Q: In a survey of 2263 adults, 742 say they believe in UFOS. Construct a 95% confidence interval for…

A:

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

A:

Q: Question 86 parts A, B, and C

A:

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: In terms of z scores, a 95% confidence interval consists of which of the following ranges? 1. ±1 z

A: Given, Z=x-μσ where, x= observed value μ=mean of the sample σ=standard deviation

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: A 95% confidence interval for the population proportion of professional tennis players who earn more…

A: 95% confidence interval for p : (0.82,0.88)Sample size used(n) = ? Margin of error : E = sample…

Q: Question 85 parts A, B, and C

A:

Q: Use the following to answer the next two questions. A 2020 poll found that 520 out of 824 randomly…

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: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

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

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

Q: A confidence interval was constructed to approximate a population proportion. The interval was from…

A: We have given that,  Let p̂ represents the sample proportion and E represents the margin of error,…

Q: A survey found that 33 of 66 randomly selected women and 37 of 66 randomly selected men follow a…

A:

Q: Latasha is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each…

A:

Q: The figure to the right shows the results of a survey in which 999 adults from Country​ A, 1006…

A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

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

A: which of the following confidence intervals would have a wider width for the same set of data?…

Q: A publishing company is studying the sales of various franchises in their chain of stores. A…

A: We are given confidence intervals for the population mean daily sales at 90%, 95%, 97% and 99%…

Q: let the variable T stand for a student t-distributed variable. find the following a. in a sample of…

A: The Student t-distribution is used to find the confidence interval.

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

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

Q: Question 1 Out of 300 people sampled, 219 had kids. Based on this, construct a 99% confidence…

A: According to the given information, we have Total number of people sampled = 300 Out of 300 people…

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

A:

Q: a​ poll, ​37% of the people polled answered yes to the question​ "Are you in favor of the death…

A:

Q: The figure to the right shows the results of a survey in which 997 adults from Country​ A, 1022…

A: Given data For country A n = 997

Q: In a study, 110 children of a certain race in a certain city were randomly assigned to one of two…

A: There are two independent samples which are Preschool and No Preschool. We have to construct 95%…

Q: The data given below gives the marks scored by six second year students taking BSc. Engineering: 87,…

A: From the provided information, Sample size (n) = 6 The sample mean and standard deviation can be…

Q: IF n=23, x-bar = 39, and s=3, find the margin of error at a 80% confidence level. Give answer to two…

A:

Q: A car insurance company wanted information about the age of its customers. A researcher computed…

A: given data  there are 4 confidence intervals (36.30,39.70) (36.70,39.30) (36.56,39.44) (36.91,39.09)…

Q: If we find a 95% confidence interval using a sample, then we can say... 95% of individuals will fall…

A: Given that:A 95% confidence interval using a sample is obtained.To find:The interpretation of this…

Q: Given that degrees of freedom is 18 at 95% confidence level, the value of t =________. Select one:…

A: Given that degrees of freedom is 18 at 95% confidence level since the hypothesis is left tailed or…

Q: which sample size of students would have a confidence interval with a smaller width?

A: Answer- ● A sample size of 500 students. Will have a confidence interval with a smaller width.

Q: Calculate a 95% confidence interval: Of the 1220 respondents for whom we have information, 178 said…

A: given that,possible chances (x)=178size(n)=1220success rate ( p )= x/n = 0.1459point of estimate =…

Q: Through polling, it was estimated that the percent of people who will vote for a particular…

A: Given information Percentage of people who will vote in a upcoming election p-hat = 36.2% Margin of…

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

A:

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Given at  99% confidence interval based on this sample is: 1.7 hours to 3.1 hours.  sample mean=?…

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.