The U.S. Department of Transportation would like to estimate the proportion of drivers that are not insured in North Carolina. A pilot sample of 60 drivers from North Carolina found 18 were uninsured. Determine the total sample size needed to construct a 99% confidence interval for the proportion of uninsured drivers in North Carolina with a margin of error equal to 3%.

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A: Given information: µ0=100x¯=103.5s=13.2n=39α=0.01

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A:

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Q: Los Angeles workers have an average commute of 28 minutes. Suppose the LA commute time is normally…

A: GivenMean(μ)=28standard deviation(σ)=15

Q: During the GS Day Activity, a group of researchers conducted their case study about the…

A: Solution: It is needed to find the correct sampling technique.

Q: Ten healthy adult subjects were asked to walk on a treadmill while connected to monitors. One of two…

A: Given information: The data is given below, n1=n2=10x¯1=7.320x¯2=5.170s1=2.10016s2=1.86073 Level of…

Q: Sampling and Sampling Techniques DEFEND YOUR ANSWER 1. Specify the SAMPLING you will apply in each…

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A: Given that, A sample of 100 people is classified by gender and by whether or not college graduates.…

Q: ndependent simple random samples selected from normally dist populations, ard deviations are equal.…

A: 6

Q: A hypothesis test with a sample of n = 15 participants produces a t statistic of t = +2.72. Assuming…

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Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

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Q: or the dataset in the table. x y 1 15 2 16 3 16 5 18 8 18 9 16 12 27 15 29 18 20 20 33 O x₁=2,…

A: Given dividing above data into 3 segments of 3,4,3 values  X dada set 1st Segment=(1,2,3) 2nd…

Q: 2. When ordering a pizza you can choose from 6 meat and 9 vegetable toppings. How many different…

A:

Q: done on body temperatures of men and women. The results are shown in the table. Assume that the two…

A: Given  μ μ1 μ2 n 11 59 x 97.54°F 97.46°F s 0.95°F 0.63°F

Q: e? what is the state alternative hypothesis?

A: A hypothesis is classified as an assertion or statement about the population parameter. There are…

Q: The following data represent the means for each treatment condition in a two factor experiment. Note…

A: Given The data is as follows:   B1 B2 A1 10 25 A2 40 ?

Q: Suppose that the number of Facebook friends users have is normally distributed with a mean of 149…

A:

Q: According to an article in Bloomberg Businessweek, New York City's most recent adult smoking rate is…

A:

Q: xperiments. In each case, it was known if the subject lied or not, o the table indicates when the…

A: Solution: Claim:  Subjects lies are independent of the polygraph test indication.

Q: What is Tschuprow's coefficient?

A: Given that We have define  the Tschuprow's coefficient

Q: 3. Julie travels 295 miles in 7 hours. To the nearest tenth, what is her ave

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A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: What is the function to got variance sigma 40?

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Q: our company wants to improve sales. Past sales data dicate that the average sale was $200 per…

A: Given that  Sample size n =9 Sample mean=250 Standard deviation =36

Q: 2.5 Nissan's owner is interested in researching how a car's age and selling price are related. A…

A: Given data:

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Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: X1=64 X2=13 n1=295 n2=312

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A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: 3. Let S be a positive rv with mean μ and variance o2. Our goal is to estimate S based on an…

A: 3) Given that E(S)=μ,Var(S)=σ2. Here X=SW, where S and W are independent and E(W)=0,Var(W)=1. For…

Q: (a) Draw a scatter diagram. Comment on the type of relation that appears to exist between x and y.…

A:

Q: for every 2 minivans there are 5 other types of vehicles if there are 161 vehicles how many of them…

A: Given: Total number of vehicles = 161 For every 2 minivans, there are 5 other vehicles

Q: If X is a normal random variable with mean 80 and standard deviation 10, compute the following…

A: Let X be the random variable from normal distribution with mean (μ) = 80 and standard deviation (σ)…

Q: Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM.…

A: Given information: 8:00 AM 12:00 AM d=8 AM temperature-12 AM temperature 98.2 98.7 -0.5 99.4…

Q: A Student scores on Professor Tanner's Stats final exam are normally distributed with a mean of 74…

A: given data  normal distribution μ = 74σ = 6.9

Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…

A: Given Information: Number of trials n=349 Number of successes (correct) x=161

Q: Refer to the accompanying data display that results from a simple random sample of times​ (minutes)…

A: Solution: The 95% confidence interval for  the population mean is (85.74, 91.76) Lower limit = 85.74…

Q: compute η2

A: η2  is given by : η2=SSbetweenSStotal

Q: A study was done on body temperatures of men and women. The results are shown in the table. Assume…

A: Standard error is used to measure the accuracy of the data set of sample distribution. Margin of…

Q: 4. A 12-oz box of cereal costs $2.28, and a 22-oz box and state which one is the better deal. For…

A: Cost of 2oz box = 2.28 Cost per ounce = 2.28/12                             = 0.19 dollars

Q: An old medical textbook states that the mean sodium level for healthy adults is 140 mEq per liter of…

A: given data, n=23df=n-1=23-1=22claim: μ≠140n=23x¯=147σ=14

Q: 3. According to an online source, 79.8% of students are right-handed in Alberta secondary schools,…

A:

Q: What is the t-statistic for the sample mean difference? B) How many degrees of freedom are there…

A: From the given information we conduct hypothesis test.

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: From given data we have : n=2769 x=978 The claim is more than one-third of employers have sent and…

Q: The standardized regression coefficient expresses the:

A: The standardized regression coefficient expresses the ?

Q: Fluoride Exposure in Drinking Water Exercise 2.250 introduces a study showing that fluoride exposure…

A: Introduction: Denote the true means for the fluoridated and non-fluoridated tap water by μ1, μ2.

Q: The owner of a new pizzeria in town wants to study the relationship between weekly revenue and…

A: The sum of squares due to regression is SSRegression = 16.75147827.

Q: 4. Birds' nests are always in danger from predators. If there are other nests close by, the chances…

A: Distance to nearest neighbor(d) Probability of predator (p) 20 47 40 34 60 32 80 17 100…

Q: An analysis of variance produces SSbetween = 45, SSwithin = 120, and an F-ratio with df = 3, 20. For…

A: