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Illusion [34]
2 years ago
8

Because not all airline passengers show up for their reserved seat, an airline sells 125 tickets for a flight that holds only 12

0 passengers. The probability that a passenger does not show up is 0.10, and the passengers behave independently. Round your answers to four decimal places (e.g. 98.7654).
Mathematics
1 answer:
Andreas93 [3]2 years ago
8 0

Answer:

Answer is 0.9738

Step-by-step explanation:

Given, n == 125

Probability that passenger will not show up, q = 0.10

Probability that passenger will show up, p = 1 - q

                                                                      = 1 - 0.10

                                                                      = 0.9

The probability that the flight departs with empty seats.

μ = np  ==>  125 x 0.9  ==>  112.5

σ = √npq ==> √125x0.9x0.1  ==> 3.354

∴ P( Z ≤ \frac{119 - 112.5}{3.354} )

P ( Z ≤ 1.94 )

= 0.9738

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ollegr [7]

Answer:

x = 2

y = -3

z = 4

( 2 , -3, 4 )

Step-by-step explanation:

x + y + z = 3 ---- i

x – y =5 ---- ii

y - z = -7 ---- iii

ii + iii

x - z = -2 ---- iv

i + ii

2x + z = 8 --- v

iv + v

3x = 6

x = 2

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horrorfan [7]

Answer:

Step-by-step explanation:

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                         = -8a - 1 + 7a - 5

                         = -8a + 7a -1 - 5 {Combine like terms}

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2 years ago
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Temka [501]

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6 0
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Step-by-step explanation:

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The length of the time that randy read is 45 minutes.

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We therefore need to subtract:

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Learn more about time from

brainly.com/question/25607827

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