Start your trial now! First week only $4.99!*arrow_forward*

Question

Suppose that 54% of people own dogs. If you pick two people at random, what is the probability that they both own a dog?

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: Can a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone...

A: In this question we have the data, using which we have to plot the scatter plot and best line of fit...

Q: Three cards are drawn from a deck without replacement. Find these probabilities. a. all are jacks...

A: Total number of cards in a standard deck of cards = 52There are 4 suits consisting of 13 cards each....

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you bel...

A: According to previous evidence, the population proportion (p) is 36%, that is, 0.36.Here, the margin...

Q: The book states the following: "The smaller our sample size and the more extreme the outlier score i...

A: We know from equation 1 below that the width of confidence interval is inversely proportional to the...

Q: Listed below are brain volumes, measured in cubic centimeters, of twins at birth. Use a 5% significa...

A: Solution:Null and alternative hypotheses:Null hypothesis: µ1 − µ2 = 0 (equivalently µ1 = µ2)Alternat...

Q: What do you need to look for in bivariate screening (for each categorical and quantative variables)?

A: Solution:Bivariate analysis helps to determine the relationship of two variables. The possible combi...

Q: A population has a mean of 15 and standard deviation of 3. Round the answers to two decimal places a...

A: Let X be the observation. X follows normal distribution with mean μ = 15 and the standard deviation ...

Q: Consider the following data on x= height of a building and y = number of stories for nine notable bu...

A: Given data of x= height of building and y = number of stories for nine notable buildings as shown be...

Q: It is thought that basketball teams that make too many fouls in a game tend to lose the game even if...

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you. ...

Q: Q5. You are considering two investment choices: a. 1 year CD that pays 2% for sure; b. investing in ...

A: It is provided that the investment in CD has return of 2% for sure.So, the mean return of this inves...

Q: A researcher obtains hamstring measurements from a group of classmates. She then classifies those me...

A: Accordingt o the given question;A researcher obtains hamstring measurements from a group of classmat...

Q: A student takes a multiple choice test that has 11 questions. Each question has four choices. The st...

A: Identifying the distribution:It is given that the student takes a multiple choice test that has 11 q...

Q: Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy adu...

A: The provided information are:

Q: The point on a normal distribution (mean equals 6 and standard deviation equals 9) that is greater t...

A: The given information is that the scores distributed normally with mean 6 and standard deviation 9.F...

Q: 10 9 8 6 Frequency 5 4 3 2 1 0 to 9 10 to 19 20 to 29 30 to 39 40 to 49 50 to 59 The table above lis...

A: Frequency table:Frequency table represents the number of times each class repeats.The frequency of e...

Q: NUMBER 22

A: Normal approximation to the binomial:From the given information, it is clear that sample size, n = 5...

Q: Do most researchers still insist on at least interval level of measurement as a condition for the us...

A: Solution:In Interval scale, the difference between two values are standardized and equal. Most stati...

Q: yai ayu, au uiaı uie iwu aapico aI IIupcInuc J pi IaIuvII apico ocicLICu 1VIITIVILIany uiouIvulcu pu...

A: Solution:Null and alternative hypotheses:The null and alternative hypotheses to test is given below:...

Q: Do larger universities tend to have more property crime? University crime statistics are affected by...

A: Part (a):The scatter diagram, along with the best fitted line (least-squares regression line) for th...

Q: Q5. You are considering two investment choices: a. 1 year CD that pays 2% for sure; b. investing in ...

A: Portfolio Mean and SDI am answering all the sub-partsQ5. You are considering two investment choices:...

Q: Hi. How do you arrive at an answer using the TI-83? Thanks.

A: Solution:99% confidence interval for the slope of the regression line is calculated using EXCEL.The ...

Q: The data 17.7 33.5 26.3 22.9 21.4 e 28.9 24.2 18.3 27.9 21.2 19.2 22.121.6 37.7 37.4 presents the bo...

A: Frequency distribution:Frequency of an interval is the number observations that fall in that interva...

Q: Listed below are the amounts of mercury (in parts per million, or ppm) found in tuna sushi sample...

A: In this question, we have the data of amount of mercury in tuna sushi stores using the data we have ...

Q: How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y b...

A: Part (a):The scatter diagram, along with the best fitted line (least-squares regression line) for th...

Q: Returning to a possible class quiz, Sue believes there will be a quiz and offers 3:2 odds, Adam does...

A: Let betting x amount with Sue and y amount with AdamInvestment equation is shown in eq 1Formula fo...

Q: 3.It is thought that basketball teams that make too many fouls in a game tend to lose the game even ...

A: (a) The value of coefficient of determination:The given data is represented in the following table:

Q: Let z=a be a positive z score in a standard normal distribution. If the area under z>a is 0.4, th...

A: Standard normal distribution:A normal distribution with mean (µ) 0 and variance (σ2) 1 is called sta...

Q: The efficiency for a steel specimen immersed in a phosphating tank is the weight of the phosphate co...

A: Hi, since the problem posted by you contains multiple sub-parts, we are answering the first three su...

Q: Two dice are rolled. Find the probability of getting A. A sum of 5,6,7 B. Doubles or sum of 6 or 8 ...

A: Sample space for rolling two dice:It is given that two dice are rolled. The number of possible outco...

Q: Which variable is most likely to be an independent variable? reading test score stress level runnin...

A: An independent variable is one whose variation does not depend on any other variable and it is under...

Q: Are there ever any circumstances when a correlation such as Pearson's r can be interpreted as eviden...

A: Correlation between any two variables tell us the linear association meaning that one variable rise ...

Q: (a) In the random number table, assign the digits 0 through 8 to the event "successful surgery" and ...

A: Total number of digits assigned to event "successful surgery" (0-8) = 9Total number of digits assign...

Q: Hospitals typically require backup generators to provide electricity in the event of a power outage ...

A: Independent events:If A and B are two independent events, the probability of the event A and B can b...

Q: Zar (1999) describes an experiment in which 13 people with hemophilia were random oTeceve drug B and...

A: NOTE:Hi, the posted question is based on the data of haemophilia, but in part (a) it is asked to fin...

Q: For a correlation of -.64 between X and Y, each 1 _SD change in Zx corresponds to a predicted change...

A: It is provided that the correlation between X and Y is -0.64. So, r = -0.64.We have the relation, Zy...

Q: a. Using the pairs of values for all 10points, find the equation of the regression line. b. After r...

A: Part (a):From the graph, the data points are (1,7),(1,8),(1,9),(2,7),(2,8),(2,9),(3,7),(3,8),(3,9),a...

Q: Directions: Draw the normal curve and shade the specific region show formulas A random same of 2...

A: Confidence interval:The (1-α) % confidence interval for proportion p is given by,

Q: what would be the mean and standard deviation of each chart!! I am having trouble calculating this. ...

A: Calculation: Mean:Before mean:Control: (5 + 1 + 2)/3 = 2.67. [(Before Stephanie + Before Brenda + Be...

Q: In a recent survey conducted by the International Nanny Association, 4,176 nannies were placed in a ...

A: Yes, it is appropriate to divide 24 by 4,176.

Q: An experiment conducted by a scientist uses 2 tablets of Aspirin per day to see the blood thinning i...

A: Controlled variables:In an experiment, a controlled variable is a variable or characteristic of the ...

Q: The table below shows the critical reading scores for 14 students the first two times they took a st...

A: Given the data of critical reading scores for 14 students the first two times they took a standardiz...

Q: Thirty-four small communities in Connecticut (population near 10,000 each) gave an average of x = 13...

A: The provided information are:

Q: Suppose you are assigned the number 1, and the other students in your statistics class call out cons...

A: Solution:(a) A random sample of four students from statistics class can be selected by using a compu...

Q: A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime...

A: Test statistic calculation:In this context, a police officer claimed that the proportion of accident...

Q: Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annu...

A: Note:Hi! Thank you for posting the question. Since your question has more than 3 parts, we have solv...

Q: A statistical program is recommended. Electromagnetic technologies offer effective nondestructive se...

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

Q: Recall that Benford's Law claims that numbers chosen from very large data files tend to have "1" as ...

A: Hello there! there are moe than three subparts in the question. According to our policies cannot ans...

Q: (c) Compute the sample correlation coefficient r for each of the following data sets and show that r...

A: Sample correlation coefficient:The Karl Pearson’s product-moment correlation coefficient or simply, ...

Q: Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). T...

A: Confidence interval when population standard deviation is not known:The formula of confidence interv...

Q: Assume that a populatio of thousands of people whose responses were used to develop the anxiety test...

A: Hey, since there multiple subparts posted, we will answer first three subparts. If you want any spec...