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1. The total degrees of freedom for an experiment with n1= 10,n2= 12, and n3= 10 is ____.
2. By doing multiple t tests when there are more than 2 experimental groups we increase the risk of making what kind of mistake?
a) accepting Ho
b) Type I error
c) Type II error
d) all of the above
3. If X1=46, X2= 50, X3= 92 and n1=n2=n3, what is the value of Xg?
a) cannot be determined from information given
b) 50.0
c) 188.0
d) 62.67
Can the following variables be correlated and, if so, would you expect the correlation to be positive or negative?- Height and weight of adults.
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The sample mean was 83; the sample standard deviation was 10. Does it appear that the mean work week has increased for women at the 5% level?
Question: The logistic equation is commonly used to model growth phenomena in biological populations: Y = (L/(1+e^-a(x-b)), where Y is the response
Construct a stem-and-leaf plot for these data.- Compute the ratio IQR/s.- Construct a normal probability plot for these data.- Is there any evidence to suggest these data are from a non-normal population? Justify your answer.
In "An Informal Look at Use of Bakery Department Tongs and Tissues," a researcher named Trinkaus reported: "Of 108 people observed extracting
brief introduction about the assignment and search related article and write a paragraph of summary which supports your assignment
1. Find the probability of the complement of the event described.
each day at a manufacturing plant a lot of 8 items are manufactured and three are known to be defective. a sample of 2
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a random sample of 16 measurements is drawn from a population with a mean of 60 and a standard deviation of 5.a.
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