Help with:Draw a scatter diagram of the data, treating age as the explanatory variable. What type of relation, if any, appears to exist between age and HDL cholesterol?Determine the least-squares regression equation from the sample dataAssuming the residuals are normally distributed, test whether a linear relation exists between age and HDL cholesterol levels at the α=0.01 level of significance. What are the null and alternative hypotheses?What is the P Value:What conclusion can be drawn at α=0.01 level of significance?Assuming the residuals are normally distributed, construct a 95% confidence interval about the slope of the true least-squares regression line.Lower boundUpper boundFor a 42-year-old male patient who visits the doctor's office, would using the least-squares regression line obtained in part (b) to predict the HDL cholesterol of this patient be recommended?A good estimate for the HDL cholesterol of this patient is A doctor wanted to determine whether there is a relation between a male's age and his HDL (so-called good) cholesterol. The doctor randomly selected 17 of his patients and determined their HDL cholesterol. The data obtained bythe doctor is the in the data table below. Complete parts (a) through (f) below.Click the icon to view the data obtained by the doctor.... ..(a) Draw a scatter diagram of the data, treating age as the explanatory variable. What type of relation, if any, appears to exist between age and HDL cholesterol?A. The relation appears to be linear.B. The relation appears to be nonlinear.C. There does not appear to be a relation.Age vs. HDL cholesterol dataAge, xHDL Cholesterol, yAge, xHDL Cholesterol, y D36584043405265614433305430565034553529465239524061405153634038272547PrintDone

Solution (c)Checking whether there are any outliers or influential observations: The scatterplot…

Answered: Draw a scatter diagram of the data,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Draw a scatter diagram of the data, treating age as the explanatory variable. What type of relation, if any, appears to exist between age and HDL cholesterol?
Determine the least-squares regression equation from the sample data
1. Assuming the residuals are normally distributed, test whether a linear relation exists between age and HDL cholesterol levels at the α=0.01 level of significance.
  
  What are the null and alternative hypotheses?
What is the P Value:
What conclusion can be drawn at α=0.01 level of significance?
Assuming the residuals are normally distributed, construct a 95% confidence interval about the slope of the true least-squares regression line.
1. Lower bound
2. Upper bound
For a 42-year-old male patient who visits the doctor's office, would using the least-squares regression line obtained in part (b) to predict the HDL cholesterol of this patient be recommended?
A good estimate for the HDL cholesterol of this patient is

A doctor wanted to determine whether there is a relation between a male's age and his HDL (so-called good) cholesterol. The doctor randomly selected 17 of his patients and determined their HDL cholesterol. The data obtained by
the doctor is the in the data table below. Complete parts (a) through (f) below.
Click the icon to view the data obtained by the doctor.
... ..
(a) Draw a scatter diagram of the data, treating age as the explanatory variable. What type of relation, if any, appears to exist between age and HDL cholesterol?
A. The relation appears to be linear.
B. The relation appears to be nonlinear.
C. There does not appear to be a relation.
Age vs. HDL cholesterol data
Age, x
HDL Cholesterol, y
Age, x
HDL Cholesterol, y D
36
58
40
43
40
52
65
61
44
33
30
54
30
56
50
34
55
35
29
46
52
39
52
40
61
40
51
53
63
40
38
27
25
47
Print
Done

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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