In a sample of 61 households, one house is worth $2,500,000. Half of the rest are worth $280,000, and all the others are worth $315,000. Which is the better measure of the "center": the mean or the median? The Click for List is the better measure of the "center".

Q: Find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of…

A: We have given thatMean() = 238standard deviation() = 67sample size (n) = 33

Q: A one-tailed sign test is used to test whether there is a positive difference between two…

A: A one-tailed sign test is used to test whether there is a positive difference between two…

Q: Need C please

A: Given that the value of the test statistic (t) = -1.383sample size (n1) = 41sample size (n2) = 44

Q: Identify the values needed to calculate a confidence interval at the 99% confidence level. Then find…

A: It is given that favourable cases, x = 76Sample size, n = 350Confidence level = 99%

Q: A new fuel injection system has been engineered for pickup trucks. The new system and the old system…

A: Given,Claim:- There is a difference in population variance of gasoline consumption for the two…

Q: Sleep apnea is a disorder in which you have one or more pauses in breathing or shallow breaths while…

A: Given thatIn a cross sectional study of 340 adults who suffer from sleep anemia it was found that…

Q: Find the margin of error for the given values of​ c, s, and n.   c=0.95​, s=6​, n=15

A:

Q: 40 men participating in a study reported how angry they felt at the end of each day for 2 weeks. For…

A: A variable is a characteristic that is being measured.

Q: A national polling agency conducted a survey based on a random sample of Americans. The poll finds…

A: Sample proportion p^ =0.26Margin of error=0.08

Q: c. The p-value = 0.0101 x (Please show your answer to 4 decimal p

A: Test statistic t = -2.813Null and alternate hypothesisH0:μ1=μ2H1:μ1≠μ2

Q: Break.com is an ad-supported video-sharing website. Its advertisers can choose to have their ad…

A: n=60,x¯=1,σ=0.25,CI=95%=0.95α=1−CI=1−0.95=0.05

Q: Suppose that, at the end of last semester, Marie gave her introductory statistics class a final…

A: The total number of students is 64A histogram plot representing the distribution of the  exam scores…

Q: What is the critical t-value (found in the t-table) if you are making a 90% confidence interval with…

A: Confidence level=90%Sample size(n)=20

Q: For a population with a proportion equal to 0.37, calculate the standard error of the proportion for…

A: The Population proportion isp=0.37The sample size is 40,80,120

Q: Assuming the fasting blood glucose level among diabetics is normally distributed with mean 106 mg /…

A: Population mean=100Population standard deviation=10

Q: At a used-book sale, 84 books are adult books and 165 are children's books. Of the adult books, 60…

A: adult bookchildren bookTotalfiction24110134non- fiction60055115Total84165249

Q: Use the below BMI’s to find the 5-number summary.  15.9​ 19.3​ 19.4​ 20​ 20.1​ 21.0​ 21.0​…

A: The five number summary consists of,Minimum valueFirst quartile.Second quartile.Third…

Q: A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

A: The amounts of mercury found in tuna sushi sampled at different stores in a city are given…

Q: Let T be the time from birth until death (in years) of a randomly selected member of a population.…

A: T is the time from birth until death of a randomly selected member of a population.T has a Gamma…

Q: A standard 8 sided die (with sides 1,2...8) is rolled 5 times. How many ways can it be done so that…

A: Given,a dice is 8-sided and it is rolled 5 times.The number of ways 7 was rolled exactly two times…

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A:

Q: A sample of 135 is drawn from a population with a proportion equal to 0.58. Complete parts a)…

A: A sample of 135 is drawn from a population with a proportion equal to 0.58.

Q: The mean amount of money spent per week on gas by a sample of 32 Oxford drivers was found to be…

A: The sample size is 32, the sample mean is 32.38 and the sample standard deviation is 2.63.

Q: A simple random sample of size n = 400 individuals who are currently employed is asked if they work…

A:

Q: A chemical plant has an emergency alarm system. When an emergency situation exists, the alarm sounds…

A: Let, Event A = Real emergency situation.And Event B = The alarm sounds.So,Probability of an…

Q: A random sample of 130130 observations produced a mean of ?=30.2x¯=30.2 from a population with a…

A: It is given that x̄ = 30.2σ = 4.49n = 130

Q: probability that a baby is a boy and the probability that a baby is a girl both equal to 0.5. If the…

A: It is given that the babies born at a hospital are independent events.

Q: Use the spinner shown. It is equally probable that the pointer will land on any one of the regions.…

A: It is equally probable that the pointer will land on any one of the regions.

Q: The ability of an interval estimates to contain the value of the population parameter is described…

A: The given question is:The ability of an interval estimates to contain the value of the population…

Q: For a population that is left skewed with a mean of 24 and a standard deviation equal to 10,…

A: The question is about central limit theorem.Given :Mean value of the population (  ) = 24Standard…

Q: The cost function y = 150 +7X OA. has a slope coefficient of 150 OB. has an intercept of 150 OC.…

A: The cost functiony = 150 + 7*X

Q: two researchers (A and B) compute a two-independent sample t test. For both tests, the standard…

A: The standard error is the same for both researchers A and B.The mean difference between the groups…

Q: In many settings, the "rules of probability" are just basic facts about percentages. The Graduate…

A: Percentage from Africa = 1.9%Percentage from Australia and Pacific Islands = 0.3%Percentage from…

Q: Please show all workings 1. One hundred persons were asked, "Do you favour regional integration?".…

A: Of the 35 that answered "no" to the question, 14 were female. Of the 65 that answered "yes" to the…

Q: Suppose taxi fares from Logan Airport to downtown Boston is known to be normally distributed and a…

A: The given data is as follows:Confidence level, The confidence interval is The objective is to choose…

Q: A marketing researcher is hired by a corporation to conduct a study and estimate the population mean…

A: The question is about sample size estimation.Given : Maximum error ( E ) = 5Standard deviation of…

Q: There are four different classes one can take as an elective. The students ranks the four in order…

A: There are four different classes one can take as an elective.The students rank the four in order of…

Q: The density of people per square kilometer for African countries is in table #2.2.11 ('Density of…

A: The given data represents the density. The given number of classes for the frequency table is 7.

Q: Consider a data set that has a mean of 17 and a standard deviation of 7.2. According to Chebyshev's…

A: μ=17,σ=7.2

Q: Which type of confidence interval should you use in this situation? A sample of 6 adult elephants…

A: It is given that Mean = 12200Sample std. deviation = 200Sample size = 6Confidence level = 95%

Q: If the A x B interaction is significant, then at least one of the two main effects also must be…

A: It is given that the A x B interaction is significant. So, if we assume that A and B are two…

Q: What is the midpoint of class 7-11?  A) 9.5 B) 9 C) 5 D) 4

A: From the provided information,The class is 7-11.Upper limit = 11Lower limit = 7

Q: Dirty air: The federal government has enacted maximum allowable standards for air pollutants such as…

A: The random variable is x.We have to find the mean and standard deviation.This is continuous…

Q: The following shows the probability distribution for blood types in the U.S. Blood Type Probability…

A: P(O) = 0.45P(A) = 0.41P(B) = 0.10P(AB) = 0.04Formula Used:P(A or B) = P(A) + P(B)

Q: An engineer wants to determine how the weight of a car, x, affects gas mileage. y. The following…

A: CarABCDEWeight(pounds),x25502900349536504230Mile per Gallon,y26.625.12519.115.9Explanatory variable…

Q: a) Find the value of ‘*’ and Find the expected category of hurricane to make landfall, E(X).   What…

A: xP(X=x)10.4120.3430.1340.075*

Q: The XO Group Inc. conducted a 2015 survey of 13,000 brides and grooms married in the United States…

A: From the provided information,

Q: Determine the sample size required to estimate a population mean to within 11 units given that the…

A: Margin of error=E=11Population standard deviation=105

Q: Let z be a standard normal random variable with mean = 0 and standard deviation = 1. Find the value…

A: From the provided information,

Q: As a labor economist, you would like to measure the effect that an older sibling has on the average…

A: In the given scenario, we want to compare the average level of education of the sibling depending on…