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postnew [5]
3 years ago
14

In response to the increasing weight of airline passengers, the Federal Aviation Administration (FAA) told airlines to assume th

at passengers average 200 pounds in the summer, including clothes and carry-on baggage. But passengers vary, and the FAA did not specify a standard deviation. A reasonable standard deviation is 35 pounds. Weights are not Normally distributed, especially when the population includes both men and women, but they are not very non-Normal. A commuter plane carries 30 passengers.
Required:
Explain why you cannot calculate the probability that a randomly selected passenger weighs more than 200 pounds.
Mathematics
1 answer:
velikii [3]3 years ago
4 0

Answer:

Because we don't know the exact shape of the population distribution since they are not Normally distributed and they are also not very non-Normal

Step-by-step explanation:

We are given;

Population standard deviation;μ = 200

Population standard deviation; σ = 35

Sample size; n = 30

We are told that the weights are not Normally distributed and they are also not very non-Normal. Therefore it means we don't know the exact shape of the population distribution and as such we can't calculate the probability that a randomly selected passenger weighs more than 200 pounds.

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Step-by-step explanation:

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Charlie’s pizza charges $12 for a medium cheese pizza plus $2 for each additional topping. The cost of a medium pizza, y, with x
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Answer:

<u>The correct answer is Graph A. It's the only graph with the right values for (x, y) within the Cartesian plane. </u>

Step-by-step explanation:

1. Let's review the data given to us for solving the question:

Amount that Charlie’s pizza charges for a medium cheese pizza = US$ 12

Amount that Charlie’s pizza charges for each additional topping = US$ 2

Cost of a medium pizza (y) with (x) toppings is represented by the equation:

y = 12 + 2x

2. Let's find the values for the equation:

When no toppings are added:

y = 12 + 2 * 0 = 12 + 0 = 12

When 1 topping is added:

y = 12 + 2 * 1 = 12 + 2 = 14

When 2 toppings are added:

y = 12 + 2 * 2 = 12 + 4 = 16

When 3 toppings are added:

y = 12 + 2 * 3 = 12 + 6 = 18

When 4 toppings are added:

y = 12 + 2 * 4 = 12 + 8 = 20

As we can see, the graph starts with the point (0, 12) and continues with (1, 14), (2, 16), (3, 18), (4, 20).  

Graph B starts with the point (0, 4) and graph C with the point (0,6). They're incorrect. And graph D starts with (0, 12) but continues with (1, 13), (2, 14) (3, 15) and (4, 16), so this graph is also incorrect.

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Step-by-step explanation:

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Question 6 (1 point)
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The face of the triangular concrete panel shown has an area of 22 square meters, and its base is 3 meters longer than twice its
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Answer:

The length of the base is 11 meters.

Step-by-step explanation:

The diagram of the triangle is not shown; However, the given details are enough to solve this question.

Given

<em>Shape: Triangle</em>

<em>Represent the height with h and the base with b</em>

b = 3 + 2h

Area = 22

Required

Find the length of the base

The area of a triangle is calculated as thus;

Area = \frac{1}{2} * b * h

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The formula becomes

22 = \frac{1}{2} * (3 + 2h) * h

Multiply both sides by 2

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Open the bracket

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Rearrange

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Divide both sides by 2

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Since height can be negative, we'll discard h = -\frac{11}{2}

Hence, the usable value of height is h = 4

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Substitute 4 for h

b = 3 + 2(4)

b = 3 + 8

b = 11

Hence, the length of the base is 11 meters

3 0
3 years ago
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