6. Television station ABC wants to know the proportion of TV owners in Metro Cebu who watch the station's new program at least once a week. The station asked a group of 1000 TV owners in Metro Cebu if they watch the program at least once a week. a) Identify the individuals of the study and the variable. b) Do the data comprise a sample? If so, what is the underlying population? c) Is the variable qualitative or quantitative? d) Identify a quantitative variable that might be of interest. e) Is the proportion of viewers in the sample who watch the new program at least once a week a statistic or a parameter? 7. Examine the scatter diagrams in figure below and then answer the following questions. (a) (b) (c) a) Which diagram has no linear correlation? b) Which has perfect linear correlation? c) Which can be reasonably fitted by a straight line? 8. Sand driven by wind creates large beautiful dunes at the Great Sahara Desert. Is there a linear correlation between wind velocity and sand drift rate? Let x be a random variable representing wind velocity (in 10 cm/sec) and let y be a random variable representing drift rate of sand (in 100 g/cm/sec). A test site at the Great Sahara Desert gave the following information about x and y. 70 115 105 82 93 125 88 3 45 21 7 16 62 12 (a) Construct a scatter diagram. (b) Suppose the computed value of r gives 0.949, what does the value tell you?
6. Television station ABC wants to know the proportion of TV owners in Metro Cebu who watch the station's new program at least once a week. The station asked a group of 1000 TV owners in Metro Cebu if they watch the program at least once a week. a) Identify the individuals of the study and the variable. b) Do the data comprise a sample? If so, what is the underlying population? c) Is the variable qualitative or quantitative? d) Identify a quantitative variable that might be of interest. e) Is the proportion of viewers in the sample who watch the new program at least once a week a statistic or a parameter? 7. Examine the scatter diagrams in figure below and then answer the following questions. (a) (b) (c) a) Which diagram has no linear correlation? b) Which has perfect linear correlation? c) Which can be reasonably fitted by a straight line? 8. Sand driven by wind creates large beautiful dunes at the Great Sahara Desert. Is there a linear correlation between wind velocity and sand drift rate? Let x be a random variable representing wind velocity (in 10 cm/sec) and let y be a random variable representing drift rate of sand (in 100 g/cm/sec). A test site at the Great Sahara Desert gave the following information about x and y. 70 115 105 82 93 125 88 3 45 21 7 16 62 12 (a) Construct a scatter diagram. (b) Suppose the computed value of r gives 0.949, what does the value tell you?
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
Transcribed Image Text:6. Television station ABC wants to know the proportion of TV owners in
Metro Cebu who watch the station's new program at least once a week.
The station asked a group of 1000 TV owners in Metro Cebu if they watch
the program at least once a week.
a) Identify the individuals of the study and the variable.
b) Do the data comprise a sample? If so, what is the underlying
population?
c) Is the variable qualitative or quantitative?
d) Identify a quantitative variable that might be of interest.
e) Is the proportion of viewers in the sample who watch the new
program at least once a week a statistic or a parameter?
7. Examine the scatter diagrams in figure below and then answer the
following questions.
(a)
(b)
(c)
a) Which diagram has no linear correlation?
b) Which has perfect linear correlation?
c) Which can be reasonably fitted by a straight line?
8. Sand driven by wind creates large beautiful dunes at the Great Sahara
Desert. Is there a linear correlation between wind velocity and sand drift
rate? Let x be a random variable representing wind velocity (in 10
cm/sec) and let y be a random variable representing drift rate of sand (in
100 g/cm/sec). A test site at the Great Sahara Desert gave the following
information about x and y.
70
115
105
82
93
125
88
3
45
21
7
16
62
12
(a) Construct a scatter diagram.
(b) Suppose the computed value of r gives 0.949, what does the
value tell you?
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