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Review on statistics and probability
Review on statistics and probability
20 terms
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StudBud Administration
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probability up to inference statistics
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Refer to the image. what is the probability that the student will pass the test?
0.0439
0.0036
0.0546
0.1937
2
Two mutually exclusive events are always:
independent events
subjective events
dependent events
complementary events
3
Which p-values will lead us to reject the H0 if the significance level is 5%?
0.06
0.10
0.025
0.15
4
Are the events ‘A Airlines’ and ‘late” independent?
No
Yes
5
Refer to image
D
C
B
A
6
If 1 flight is randomly selected, find the probability that it was An A airlines and late?
0.846
0.545
0.0690
0.154
7
If
A
and
B
are independent events and
P
(
A
) = 0.3 and
P
(
B
) = 0.6, then
P
(
A
∪
B
) is
0.9000
0.1800
0.5000
0.7200
8
If 1 flight is randomly selected, find the probability that it was Late?
0.554
0.545
0.154
0.126
9
Refer to image
A
C
D
B
10
A researcher claims that 62% of respondents favor parental control on internet. Identify H0.
H0: p ≠ 0.62, H1: p= 0.62
H0: p ≥ 0.62, H1: p < 0.62
H0: p = 0.62, H1: p ≠ 0.62
H0: p < 0.62, H1: p ≥ 0.62
11
If 1 flight is randomly selected, find the probability that it was An A airlines
0.379
0.917
0.434
0.448
12
Refer to image
D
B
A
C
13
Refer image
H0: µ = 98.6, H1: µ< 98.6; left-tailed
H0: µ = 98.6, H1: µ> 98.6; right-tailed
H0: p < 98.6, H1: p ≥ 98.6; right-tailed
H0: µ = 98.6, H1: µ≠ 98.6; two-tailed
14
If 1 flight is randomly selected, find the probability that it was An A airlines or late
0.448
0.0690
0.545
0.505
15
Are the events ‘A Airlines’ and ‘late” mutually exclusive?
Yes
No
16
Refer to the image. The probability that she gets five such calls in one day is
0.0361
0.2000
0.9834
0.0378
17
Refer to image
A
B
D
C
18
Refer to image
C
A
D
B
19
If
P
(
A
) = 0.3,
P
(
B
) = 0.5, and
P
(
A
∪
B
) = 0.6, then
P
(
A
|
B
) is_________.
0.8333
0.4000
0.4500
0.5000
20
Refer to the image.
0.9713
0.9772
0.0228
0.9821
