4. (CLO 3) Find a correlation between height and shoe size. a. Create a scatterplot of the data. Height is x-axis and Shoe size is y-axis. Attach your scatterplot to the end of this document. b. Find the linear correlation coefficient. What does this tell you about your data? c. Write the equation of the regression line and use it to predict the shoe size of a person that is 68 inches tall.

4. (CLO 3) Find a correlation between height and shoe size. a. Create a scatterplot of the data. Height is x-axis and Shoe size is y-axis. Attach your scatterplot to the end of this document. b. Find the linear correlation coefficient. What does this tell you about your data? c. Write the equation of the regression line and use it to predict the shoe size of a person that is 68 inches tall.

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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Question

Hi Bartleby Team, I need help with the last part of this exercise, part 1, 2 and 3 are done but I need help with the part 4(CLO 3) A,B,C please. Thanks in advance.

West Coast University
Signature Assignment Page 2 of 2
3. (CLO 2) Test a claim that the mean height of your population is different from 64 inches. Use the appropriate
significance level a you fixed earlier.
a. State the initial and alternative hypothesis.
Ho:p= 64
Ha:p#64
b. Find the test statistic and the P-value. You must first write the formula for the test statistic and then
substitute your appropriate numbers.
t= 68.556-64
4.03
3. 3916
ニ
Vn
c. Draw a conclusion in context of the situation. Your conclusion should include both the formal language as
well as an informal explanation. iguificance leve (= 5% a=0.05
e
Keject the nul hypthesis, there are
to conclude thot the mean height of populotion significantly
differs from 64 inches.
sufficient evridence
4. (CLO 3) Find a correlation between height and shoe size.
a. Create a scatterplot of the data. Height is x-axis and Shoe size is y-axis. Attach your scatterplot to the end
of this document.
b. Find the linear correlation coefficient. What does this tell you about your data?
C. Write the equation of the regression line and use it to predict the shoe size of a person that is 68 inches tall.

b. Collect the sample and record the data. Use a single unit for height. Do not use a mixed unit like feet and
inches.
Person 1 Person 2 Person 3 Person 4
Person 5
Person 6
Person 7
Person 8
Person 9
747067 61
72
13
69 64 69 71
13
Height
12
14
12
12
Shoe Size
12
2. (CLO 1) Construct a confidence interval to estimate the mean height and the mean shoe size: you must complete
the following questions by first choosing a Confidence Level. You may choose from the familiar 90%, 95%, or
99% level of confidence.
0.05
95%
Denote this by choosing a ==-
a. Find the sample mean and sample standard deviation of the height. Denote them as i and s respectively.
X= 68.556
(mea a)
Sx= 4.03
b. Find the sample mean and sample standard deviation of the shoe sizes. Denote them as y and sy respectively.
ỹ= 12. 222
(mean)
Sy 0. 971
%3D
%3D
c. Construct and interpret a confidence interval to estimate the mean height of the population. You must
first write the formula for the confidence interval and then substitute your appropriate numbers.
(X-txX+tex)(68.556-2.306
168.556+2.3064.03)
Vn
-65.458 <p< F1.654
d. Construct and interpret a confidence interval to estimate the mean shoe size of the population. You must
first write the formula for the confidence interval and then substitute your appropriate numbers.
X+tex
12,222 + 2.306x0.971)
0.971
S
(12.222-2, 306 x
E14756,12.9684

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