check the questions first
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FINALEXAM-FALL-2018.docxID:____________ LAST NAME:____________________
Due on 23:55, Friday, 7 December 2018
A. Random variable X has a binomial distribution, B(36, 0,5).
Use the normal approximation,
Compute P{15 X 19} =
B. Random variable X has a normal distribution, N(50, 100).
Compute P{X < 41 or X 62.0} =
C. Yields of ten randomly selected samples of strawberries from a grower's field were 239, 235, 176, 217, 234, 216, 190, 181, 225,
and 318. Is there any reason to believe that the population mean yield of strawberries is significantly (𝛼 = 0.05) different from 210 grams?
Test Hypothesis:
Test statistics:
Critical value(s):
Conclusion:
D Find a linear (regression) equation with following data.
____x____ _y_____ Ans.: y = ( ) + ( ) * x
10 12
25 20 For x = 30 find =
30 22
40 26
45 30____
E. 4 groups, A, B, C, & D, were randomly selected from a
normally distributed population.
Test to find these 4 groups' means are all same (:)
|
I |
II |
III |
IV |
|
13 |
9 |
23 |
16 |
|
19 |
10 |
15 |
11 |
|
8 |
15 |
18 |
9 |
Construct ANOVA table below
|
Source |
df |
SS |
MS |
F |
|
Total |
|
|
|
|
|
Group Source |
|
|
|
|
|
Error |
|
|
|
|
Conclusion:
* A:6 points, B: 6 points, C: 10 points, D: 8 points, E: 10 points,
Total 40 points.
* This FINAL due is 23:55, Friday, 7 December 2018 .
* Your grade will be posted by 11 December 2018.
Have a Good Exam & Winter Vacation!
Prof. Kang
