For each of the following research questions, specify the parameter and the value that constitute the null hypothesis of "parameter = null value." In other words, define the population parameter of interest and specify the null value that is being tested. Make sure your definition of the parameter includes a description of the relevant population. (a) Do a majority of Americans between the ages of 20 and 31 think that the use of marijuana should be legalized? Define the population parameter of interest. the difference between the mean number of adult Americans between the ages of 20 and 31 who think the use of marijuana should be legalized and the mean number of those who do not the proportion of adult Americans between the ages of 20 and 31 who think the use of marijuana should be legalized     the mean number of adult Americans between the ages of 20 and 31 who think the use of marijuana should be legalized Specify the null value that is being tested.___   (b) Is the mean score of a certain test in a given year different from the target mean of 400 set by the test developers? Define the population parameter of interest. the proportion of test scores greater than 400 in the given year the difference between the number of test scores greater than 400 and the number of test scores less than 400 in the given year   the mean test score in the given year Specify the null value that is being tested.__   (c) Is the mean age of death for left-handed people lower than that for right-handed people? Define the population parameter of interest. the difference in the mean ages of death for left- and right-handed people the mean ages of death for left- and right-handed people    the proportion of right-handed people who live longer than left-handed people Specify the null value that is being tested.__   (d) Is there a difference in the proportions of male and female college students who smoke cigarettes? Define the population parameter of interest. the proportion of male college students that smoke more than female college students the mean number of male college students that smoke more than female college students     the difference between the proportion of male college students that smoke and the proportion of female college students that smoke Specify the null value that is being tested__

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Chapter1: Starting With Matlab
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For each of the following research questions, specify the parameter and the value that constitute the null hypothesis of "parameter = null value." In other words, define the population parameter of interest and specify the null value that is being tested. Make sure your definition of the parameter includes a description of the relevant population.
(a)
Do a majority of Americans between the ages of 20 and 31 think that the use of marijuana should be legalized?
Define the population parameter of interest.
the difference between the mean number of adult Americans between the ages of 20 and 31 who think the use of marijuana should be legalized and the mean number of those who do not
the proportion of adult Americans between the ages of 20 and 31 who think the use of marijuana should be legalized    
the mean number of adult Americans between the ages of 20 and 31 who think the use of marijuana should be legalized
Specify the null value that is being tested.___
 
(b)
Is the mean score of a certain test in a given year different from the target mean of 400 set by the test developers?
Define the population parameter of interest.
the proportion of test scores greater than 400 in the given year
the difference between the number of test scores greater than 400 and the number of test scores less than 400 in the given year  
the mean test score in the given year
Specify the null value that is being tested.__
 
(c)
Is the mean age of death for left-handed people lower than that for right-handed people?
Define the population parameter of interest.
the difference in the mean ages of death for left- and right-handed people
the mean ages of death for left- and right-handed people  
 the proportion of right-handed people who live longer than left-handed people
Specify the null value that is being tested.__
 
(d)
Is there a difference in the proportions of male and female college students who smoke cigarettes?
Define the population parameter of interest.
the proportion of male college students that smoke more than female college students
the mean number of male college students that smoke more than female college students    
the difference between the proportion of male college students that smoke and the proportion of female college students that smoke
Specify the null value that is being tested__
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