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Klio2033 [76]
3 years ago
9

I need help is it A B C or D

Mathematics
2 answers:
Temka [501]3 years ago
4 0
The answer to this is B.
Ira Lisetskai [31]3 years ago
3 0
I think the answer is B.
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1. Flight 202's arrival time is normally distributed with a mean arrival time of 4:30
Bezzdna [24]

Answer:

Step-by-step explanation:

1) Let the random time variable, X = 45min; mean, ∪ = 30min; standard deviation, α = 15min

By comparing P(0 ≤ Z ≤ 30)

P(Z ≤ X - ∪/α) = P(Z ≤ 45 - 30/15) = P( Z ≤ 1)

Using Table

P(0 ≤ Z ≤ 1) = 0.3413

P(Z > 1) = (0.5 - 0.3413) = 0.1537

∴ P(Z > 45) = 0.1537

2)  By compering (0 ≤ Z ≤ 15) ( that is 4:15pm)

P(Z ≤ 15 - 30/15) = P(Z ≤ -1)

Using Table

P(-1 ≤ Z ≤ 0) = 0.3413

P(Z < 1) = (0.5 - 0.3413) = 0.1587

∴ P(Z < 15) = 0.1587

3) By comparing P(0 ≤ Z ≤ 60) (that is for 5:00pm)

P(Z ≤ 60 - 30/15) = P(Z ≤ 2)

Using Table

P(0 ≤ Z ≤ 1) = 0.4772

P(Z > 1) = (0.5 - 0.4772) = 0.0228

∴ P(Z > 60) = 0.0228

6 0
3 years ago
In a​ week, a man received a paycheck for ​$826.60. The withholding for taxes was ​$91.40. If he worked 34 hours in that​ week,
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Answer:

Step-by-step explanation:

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2 years ago
Find the length of a line segment with endpoints of -9 and 7.
Ratling [72]
Let L be the length

so L=Lfinal - Linitial = 7 +9=16
the answer is
<span>C.16</span>
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Alice rolls a fair dice and flips a fair coin
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1,2,3,4,6 are factors of 12

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3 years ago
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What is the average temperature a b c or d
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Answer: b

Step-by-step explanation:

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3 years ago
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