Concept explainers
Tall Trees
As a biologist, you wish to see if there is a relationship between the heights of tall trees and their diameters. You find the following data for the diameter (in inches) of the tree at 4.5 feet from the ground and the corresponding heights (in feet).
Diameter (in.) | Height (ft) |
1024 950 451 505 761 644 707 586 442 546 |
261 321 219 281 159 83 191 141 232 108 |
Source: The World Almanac and Book of Facts.
1. What question are you trying to answer?
2. What type of nonparametric analysis could be used to answer the question?
3. What would be the corresponding parametric test that could be used?
4. Which test do you think would be better?
5. Perform both tests and write a short statement comparing the results
Want to see the full answer?
Check out a sample textbook solutionChapter 13 Solutions
Loose Leaf for Elementary Statistics: A Step By Step Approach
Additional Math Textbook Solutions
Math in Our World
College Algebra (Collegiate Math)
Precalculus
Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
Intermediate Algebra (13th Edition)
Probability And Statistical Inference (10th Edition)
- The cross section of a dovetail slide is shown. Before the dovetail was cut, the cross section was rectangular in shape. Find the cross-sectional area of the dovetail slide. Round the answer to 1 decimal place.arrow_forwardDetermine the cross-sectional area of a regular octagon cross-section tool steel piece shown. The piece weighs 3.72 pounds. The tool steel weighs 0.284 pound per cubic inch.arrow_forwardDescribe a situation in your life in which you might need to find the area or circumference of a circle.arrow_forward
- What is an order of magnitude? Why are orders of magnitude useful? Give an example to explain.arrow_forwardThe histogram to the right represents the weights (in pounds) of members of a certain high-school math team. What is the class width? What are the approximate lower and upper class limits of the first class? What is the class width? The class width is (Simplify your answer.). Frequency कळवलत-de 100 120 140 160 180 200 220 240 Weight (lbs)arrow_forwardDr. Seboo has collected the total cholesterol levels of all his patients. He is trying to figure what the typical cholesterol level falls. Use the following output to answer the questions. a. What variable was recorded in the data collected? Classify the variable as categorical or quantitative.Variable: ______________________ Circle one: Categorical or Quantitativeb. Describe the shape of the above distribution:c. The average cholesterol level was _______________, and 50% of this sample cholesterol levels was ________________ or more. The minimum cholesterol level was _______________, while the maximum number cholesterol level was _________________. The middle 50% of cholesterol levels in this sample were between ______________ and ______________. According to _____________________________ Rule, we expect ________% of the cholesterol levels to be between ________________ and _______________ (two standard deviations from the mean).d. Construct a 95% confidence interval for the mean…arrow_forward
- If Argyle says that she has collected data that only tell her whether the cases are the same or different, one can accurately say that she has collected data on the _____ level. a. interval b. ratio c. ordinal d. nominalarrow_forwardA scatter diagram is a visual method used to display a relationship between two ______ variables. a. nominal b. unrelated c. interval-ratio d. ordinaarrow_forwardSparrow_forward
- . The dot plot displays the number of bushes in the yards for houses in a neighborhood. What is the median?arrow_forwardHAV is a deformation of the big toe that often requires surgery. Doctors used X-rays to measure the angle (in degrees) of deformity in 38 consecutive patients under the age of 21 who came to a medical center for surgery to correct HAV. The angle is a measure of the seriousness of the deformity. Here are the data. 292216 321828 231529 352322 372249 261623 263328 202530 321933 242138 262230 112023 2124 It is reasonable to regard these patients as a random sample of young patients who require HAV surgery. Given a 95% confidence interval for the mean HAV angle in the population of all such patients, find the following. x (mean) = s=(standard deviation) = Confidence Interval: ° to ° Conclusion 1) We are 95% confident that the mean HAV angle among such patients is within this interval. 2) We are 95% confident that the mean HAV angle among such patients is outside this interval. 3) The mean HAV angle among such patients will always be outside this interval 95% of…arrow_forwardDetermine which of the four levels of measurement is most appropriate for the data belowarrow_forward
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
- Mathematics For Machine TechnologyAdvanced MathISBN:9781337798310Author:Peterson, John.Publisher:Cengage Learning,College AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning