Naini, Cobourne, McDonald and Donaldson (2008) reported that a specific ratio of height to face length of 1 to 8.5 tended to be rated as most attractive—almost exactly what Da Vinci’s idealized Vitruvian Man, predicts as “perfection” in the human form.   For this study, we want to see if there is a relationship between a person’s height and head circumference. We get a random sample of 40 people and measure both their height and their head size to the nearest centimeter. What test should you use and why?

Q: A retail store is considering adding a new product line to its inventory. The store wants to know…

A: Sample size, N = 125favourable cases, x=70Confidence level, cl = 0.90level of significance,  = 0.10

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: For a given line of best fit, you compute that r=0 using n=50 data points. Can the line be used for…

A: From the given information, Correlation coefficient: Correlation coefficient is the measure of…

Q: If you are a dog lover, having your dog with you may reduce your stress level. Does having a friend…

A: A box plot is a graphical representation of data set. The box plot gives five number summary. That…

Q: The correlation between the depth (in feet) and the length (in feet) for a sample of caves is found…

A: Given, The correlation between the depth (in feet) and the length (in feet) for a sample of caves is…

Q: in a recent poll 13% of all respondents said they are afraid of heights

A: a) Here, n = 3, p = 0.13, (1 - p) = 0.87 and x = 3As per binomial distribution formula P(X = x) =…

Q: "Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A: It is been asked to find the 95% confidence interval for difference in mean wrinkle recovery angle.…

Q: The margin of error in a research study is indicative of the precision and accuracy of the research…

A: Margin of error is a measure of the extent to which the sample may vary from population.  It is a…

Q: When estimating an unknown parameter, what does the margin of error indicate?

A: Margin of error:Margin of error is a range of values that lie above and below the sample statistic…

Q: PLEASE SHOW YOUR WORK. I WANT TO BE ABLE TO DO THE PROBLEM MYSELF AND ROUND TO 3 DECIMALS in a…

A: 3 The standard deviation of the sampling distribution of Fisher's z-transformed correlation…

Q: The length of an injection- molded plastic case that holds magnetic tape is normally distributed…

A:

Q: Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not heavily…

A: It is given that mean is 71 and standard deviation is 3.125.

Q: What is the best point estimate for average number of credit hours per semester for all students at…

A: Given : At the local college a study found that students earn an average of 14.3 credit hours per…

Q: "Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A: Given,  Permafresh - 15,13,16,12,11 Hylite - 18,14,19,16 α = 0.02

Q: "Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A:

Q: what would be a good hypothesis for calculating the average speed for cars

A: Introduction Hypothesis is an assumption that is being tested.

Q: A study collected data on green sea turtles inhabiting a lagoon. The data on curved carapace​…

A: The data on curved carapace​ (shell) length, measured in​ centimeters, for 76 captured green sea…

Q: Consider two ?2-curves with degrees of freedom 12 and 20, respectively. Which one more closely…

A: As the degrees of freedom of the chi-square distribution increases, the distribution becomes nearly…

Q: To examine bivariate data graphically, the best choice is two side by side histograms? Define this…

A: Introduction: A histogram is a graphical display mainly used to plot a univariate continuous…

Q: The height of a maple tree is 128.3 ft., is it a discrete or continuous data set

A:

Q: A study by Judge and Cable (2010) demonstrated a negative relationship between weight and income for…

A: Hello, Thanks for posting your question.  Since there are 2 images and both have the same data…

Q: Use a z-table such as https://www.math.arizona.edu/~rsims/ma464/standardnormaltable.pdf or an online…

A: The mean is 182.5 and the standard deviation is 7.4 cm.

Q: no rawn to scale corresponaing to the data in the exercises. a

A: by using pythagoras theorem

Q: The mean travel time from one stop to the next on the Coast Starlight Amtrak is 129 minutes, with a…

A: Given information y = Travel time x = distance y̅ = 129 minutes x̅ = 108 miles S.Dy = 113 minutes…

Q: Chebyshev's Theorem states that the percentage of measurements in a data set that fall within three…

A: The Chebyshev's theorem provides bounds on the probability for distributions for which mean and…

Q: Could you help me with this, please? & could you provide more details for me? thank you so much!…

A: Linear Regression Model: In the model, the dependent variable Y is the response variable and y^ is…

Q: 8. Carry out a formal t-test for the association between extroversion and neuroticism in…

A: 8. The sums are, Extroversion (x) Neuroticism (y) x2 y2 xy 43 49 1849 2401 2107 46 53 2116…

Q: Two χ2-curves have degrees of freedom 12 and 20, respectively. Which curve more closely resembles a…

A: As the degrees of freedom of the chi-square distribution increases, the distribution becomes nearly…

Q: The test statistic for the rhino data, x^2= 3.85, suggests that:

A: Given that, The test statistic for the rhino data, x^2= 3.85,

Q: Which scale of measurement most reasonably applies to race?

A: Which scale of measurement most reasonably applies to race?

Q: How long is the median relating to the 10 cm side in a triangle with sides of 6, 7 and 10 cm?

A: The Median is approximately 5.91

Q: Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A:

Q: You collect GPA data from samples of students from 5 different colleges at the university. To…

A: Given info: You collect GPA data from samples of students from 5 different colleges at the…

Q: PLEASE SHOW YOUR WORK. I WANT TO BE ABLE TO DO THE PROBLEM MYSELF AND ROUND TO 3 DECIMALS in a…

A:

Q: Why would standard z having no units of measurements be desirable for comparing data sets with…

A: The Z-score is measured in terms of standard deviations from the mean. It is the statistical…

Q: A construction manager has determined the schedule Variance (SV) of a project is $5000 and the…

A: Schedule variance (SV) and schedule performance index (SPI) are two earned value calculations that…

Q: What other options are there to guarantee the accuracy of the data collected in the field?

A: Here, it is needed to find the options those are guarantee for the accuracy of the data collected in…

Q: the temperature of a coffee cup is 185.3 degrees, is it a discrete or a continuos data set?

A: first we understooddefination of Discrete random variable→discrete random variable has a countable…

Q: Find the probability that the mean for 20 randomly selected distances is greater than 195.70 cm.

A: Given that.   X~N( μ , ?)   μ=197.5     , ?=8.9   Z-score =( x - μ )/?

Q: Which would be the most effective method to determine if the mean diameter of the suppliers products…

A: Concept: Whenever we want to check whether the mean claim is being fulfilled or not we use…