The degrees of freedom of a t-distribution is 25. 1.708 is to what percentile of the distribution? A. 75h B. 85 C. 90h D. 95h
The degrees of freedom of a t-distribution is 25. 1.708 is to what percentile of the distribution? A. 75h B. 85 C. 90h D. 95h
MATLAB: An Introduction with Applications
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
Transcribed Image Text:22) The shaded region of a t-distribution is on the left tail. If the degree of freedom is 13, and the area of
the shaded region is 0.01, what is the value of ?
A. -2.650
ne
B. 2.650
C. -1.350
D. 1.350
23) What is the area to the right of 2.60 on a t-distribution if the degree of freedom is 8?
A. between 0,005 and 0.01
C. between 0.02 and 0.025
B. between 0.01 and 0.02
D. between 0.025 and 0.05
24) . Which of the following is the 90 percentile of a t-distribution with degree of freedom equal to 25?
C. 1.316
A. 0.856
B. 1.058
D. 1.708
25) What is the 98h percentile of a t-distribution when the degree of freedom is 27?
A. 2.162
B. 2.158
C.2.154
D. 2 150
26) If the 85h percentile of a l-distribution is 1.250, what is its degree of freedom?
ion of
A. 3
В.4
C.5
D. 6
27) The degrees of freedom of a t-distribution is 25. 1.708 is to what percentile of the distribution?
C. 90
A. 75
B. 85h
D. 95
28) 4.032 is thepercentile of a t-distribution with 5 degrees of freedom.
B. 97.5
A. 95
C. 99h
D. 99.5*
29) Which of the following is TRUE about the t-distribution?
A. The exact shape of the t-distribution does depend on the degrees of freedom.
B. The exact shape of the t-distribution does NOT depend on the degrees of freedom.
C. The degrees of freedom does NOT alfect the exact shape of the t-distribution.
D. NONE of the above statements is true.
part?
-value
30) The stalement the area to the right of a positive t-value is the same as the area to the left of its
negative" is
A. Always True
B. Sometimes True Only
C. Sometimes False
D. Aways False
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