A study is done on families with children under 18 years old to see whether or not the children usually carry a mobile phone with them. The results are given in the two-way table below. Phone No phone Total Age 7-10 125 391 516 Age 11-14 383 243 626 Age 15-18 360 37 397 Total 868 671 1539 Find a 95% confidence interval for the proportion of children age 15-18 who carry phones.

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Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: From the provided information, Sample size (n) = 15 Confidence level = 98%

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Q: sted below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

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Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: Step 1: Identify the formula for the confidence interval of a population mean (μ), given that the…

Q: 25.1, 22.3, 21.8, 17.1, 19.4, 29.2, 21.4, 26.5, 16.7, 19.4, 20.5 Construct a 90% confidence interval…

A: From the provided information, Sample size (n) = 11 Confidence level = 90%

Q: Create a 95% confidence interval for the data set below. ( 48 48 48 [three decimal accuracy] 45 51…

A: xx2482304482304482304452025512601512601441936462116452025

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Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A: This question requires more accuracy, Hence I will use excel to solve this question.…

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: The 90% confidence interval for the population mean evaluation rating of courses, will signify that,…

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: The provided data set is: 3.9 3.2 3.9 5 3.1 4.2 3.3 4.3 4…

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: Given data is3.7,3.2,3.9,4.5,2.9,4.1,3.6,4.5,4.6,4.2,4.5,3.9,3.4,3.7,3.6sample size(n)=15confidence…

Q: Example: The National Health Interview Survey for 2011-2014 estimates that 37%   of 18-24 year olds…

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Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A: Sample Mean(x¯)=∑xn=3.6+3.1+3.8+4.7+3.2+4.5+3.4+4.9+4.2+4.1+4.5+3.9+3.0+3.9+3.915=58.715=3.9133…

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

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Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent" The…

A:

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A:

Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A: Given: student evaluation ratings of​ courses n=15α=0.01

Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A: The given question requires accurate answers rounded to two decimals, Hence I will use excel to…

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Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A:

Q: Lited below are shudent evaluation ratings of counes, where a rating of 5 is for "excellent" The…

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

A: From the provided information, Sample size (n) = 20

Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A: Obtain the 98% confidence interval for the population mean. The 98% confidence interval for the…

Q: A survey of 20 people asked, “If you’ve ever been married, how old were you when you were first…

A:

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is “excellent” The…

A: Solution-: We find 90% C.I. for given data

Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A:

Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A:

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: From the provided information, Sample size (n) = 15 The mean and standard deviation of the data can…

Q: Listed below are the amounts of net worth​ (in millions of​ dollars) of the ten wealthiest…

A: Sample size(n)=10sample mean(x¯)=171standard deviation(s)=33.79020degrees of…

Q: Listed below are student evaluation ratings of​ courses, where a rating of 5 is for​ "excellent."…

A: We know that, Confidence interval for population mean is given by, (X bar + - t* sigma/√n) Where X…

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: From the provided information,Sample size (n) = 15Confidence level = 95%

Q: ence interval using a 99% confidence level. What does the idence interval tell about the population…

A: Given Values3.7,3.1,3.8,4.9,3.1,4.1,3.5,4.7,4.0,4.3,4.5,3.9, 3.4,3.7,3.6