survey research company uses random digit dialing. They have a contract to estimate the percentage of people watching Spanish-language television in several Southern cities. They take a sample of size 1,000 in Dallas, Texas - which has about 1,350,000 residents. They are satisfied with the accuracy of the estimates for Dallas.

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: Population is the set of all objects of interest. For statistical studies, the complete population…

Q: The dotplot shows the body mass index (BMI) for 132 randomly surveyed people from a certain country.…

A: Step 1:To determine the number of people considered morbidly obese from the dot plot and calculate…

Q: A survey shows that 3/5 Australian adults are overweight and 1/10 Australian adults are obese. What…

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Q: A regional government is interested in expanding the facilities of a day care center for mentally…

A: Given information: It is given that stratified sampling is used with people in the city using the…

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A: It is given that: For the Industrial sector: The no. of sample size, n1=110. The no. of sampled…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

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Q: What is the test statistic? Round your answer to three decimal places. Click…

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Q: Some states now allow online gambling. As a marketing manager for a​ casino, you need to determine…

A: Given Data : Margin of error: ME = 0.02 sample proportion: p̂ = 0.5…

Q: A senator wishes to estimate the proportion of United States voters who favor abolishing the…

A: Given data  99% confidence interval for sample proportion.  E = 0.03 n = ?

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A: Given : total no pf students in a school  N=5000 with margin of error e=5%  To find sample size…

Q: A professional marketing survey involves product recognition in New York and California. Of 558 New…

A: We have to test claimm..

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: The sample size is The number of students reading above the eighth-grade level is . The objective is…

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Q: Shelly and Kelly Macdonald met up with Sarah and Tara MacNeill to go fishing in Cape Breton. They…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: The margin of error (E) is 0.03 and the confidence level is 0.95.

Q: n IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of…

A: Given: μ=100, σ=16 and SE=8.   The formula of standard error is SE=zσn

Q: Maci is a social networking maniac! Although she prefers Instagram, she also spends a lot of time…

A: Introduction A variable is a no., characteristic which can be counted or measured.

Q: A survey of 12,078 men in a particular country found that 46.9% received an influenza vaccine for a…

A: Explanation: Population: The population is the entire population of the particular group or country…

Q: s the newly hired manager of a company that provides cell phone service, you want to determine the…

A: It is given that margin of error (E) is 0.92 and the confidence level is 0.90.

Q: The Google Play app store for smartphones offers hundreds of games to download for free or for a…

A: Standard error is calculated by dividing the standard deviation and the sample size. It is denoted…

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A: Given: Margin of error E = 0.04 Significance level α = 0.05 The critical value Zα/2=Z0.05/2=1.96 The…

Q: It has been estimated that only about 30% of California residents have adequate earthquake supplies.…

A: The sample size (n) is 13 and p = 0.30.

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A: The objective is to find the appropriate test to compare average birth weight between autistic and…

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Solution-: Given: M.E.=0.03,α=0.01, We take, p^=0.5 and  q^=0.5  We find how many residents do they…

Q: A reputable polling company reports the results of an opinion poll on a recent news article A social…

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A: Margin of error=E=5%=0.05 , Confidence level=C.I=94%=0.94

Q: In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests."…

A: Given information: Sample of 200 buses and find that 20 buses fail the safety inspection. Let us…

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A: We have to find sample size required for given margin of error.

Q: A geography student in Parkville, Missouri is conducting a housing survey, including questions about…

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A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

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Q: According to an article in Newsweek, the natural ratio of girls to boys is 100:105 . In China, the…

A: Given that, According to an article in Newsweek, the natural ratio of girls to boys is  100:105 . In…

Q: A certain county had a population of 34,485 people. The county hospital is interested in estimating…

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Q: Please help answering this one:

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: A student's research shows that there were more accidents in 2015 than there were in 1915. He…

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Q: a) What is the range of these sizes? square feet

A: For the given data, we  need to find the range of the sizes.

Q: The state education commission wants to estimate the fraction of tenth-grade students that have…

A: Solution