Project #23448 - Statistics Quiz Standard Error and t-Test

Statistics Quiz-Standard Error and t-Test

Due in 45 minutes (see attachment)

 

Question 1

  1.  
    The primary contributor to the standard error of the difference between the means is the standard error of the means of the two populations.
    a.
    b.

10 points  

Question 2

  1.  
    The region of rejection is in the tails of the distribution.
    a.
    b.

10 points  

Question 3

  1.  

    As sample size increases, the level of t needed for statistical significance increases.

    a.
    b.

10 points  

Question 4

  1.  
    If tabled t is 2.23 and calculated t is 2.24, the calculated t can be considered statistically significant.
    a.
    b.

10 points  

Question 5

  1.  
    Assume a research report says t(43) = 2.37, α <0.02. For this study, confidence is <0.02.
    a.
    b.

10 points  

Question 6

  1.  
    As sample sizes go up, the size of the sampling error of the difference between the means goes
    a.
    b.
    c.

10 points  

Question 7

  1.  
    If the outcome of a test is statistically significant at the 0.05 level, what can be said about its statistical significance at the 0.01 level?
    a.
    b.
    c.
    d.

10 points  

Question 8

  1.  
    Children whose parents smoke in their presence are more likely to develop asthma than children whose parents do not smoke in their presence. How many tails should be used when looking up the t test statistic for this study?
    a.
    b.
    c.
    d.

10 points  

Question 9

  1.  
    Which of these is the most important criterion when choosing a variable on which to match participants in a related-samples study?
    a.
    b.
    c.
    d.

10 points  

Question 10

  1.  
    As the size of the population standard deviations go up, the size of the sampling error of the difference between the means goes
    a.
    b.
    c.

10 points  

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Subject Mathematics
Due By (Pacific Time) 02/22/2014 06:45 pm
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