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kompoz [17]
3 years ago
6

Jiao works as an usher at a theater. The theater has 1000 seats that are accessed through five entrances. Each guest should use

the entrance that's marked on their ticket. Jiao wants to test if the distribution of guests according to entrances matches the official distribution. He collects information about the number of guests that went through each entrance at a certain night. Here are the results: Entrance Expected # of people A 30% 398 B 30% 202 C 20% 205 D 10% 87 E 10% 108 Total 100% 1000 Jiao wants to perform a x' goodness-of-fit test to determine if these results suggest that the actual distribution of people doesn't match the expected distribution. # of people 398 202 205 87 108 1000 Jiao wants to perform a xa goodness-of-fit test to determine if these results suggest that the actua distribution of people doesn't match the expected distribution. What is the expected count of guests in entrance A in Jiao's sample? You may round your answer to the nearest hundredth.
Expected:______.
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Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0

Answer:

The answer is "300".

Step-by-step explanation:

Please find the complete solution in the attached file.

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A chain 27 feet long whose weight is 95 pounds is hanging over the edge of a tall building and does not touch the ground. How mu
bazaltina [42]

Answer:

Work done = 2,565 lb-ft

Step-by-step explanation:

The density of the chain in lb/ft  is equal to

\frac{95}{27} lb/ft

Total Work done is equal to the summation of  work done up to the top of building.

We will use integration for this evaluation.

The mathematical relation is as follows

\int\limits^{40}_0 {X} \, pdx

where "p" is the density

Substituting the given values, we get

\frac{95}{27} \int\limits^{27}_0 {X} \, dx\\\frac{95}{27}  X^2\int\limits^{27}_0\\ \frac{95}{27}  {27^2 - 0^2}\\\frac{95}{27}  * 27 * 27\\95* 27\\= 2,565

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3 years ago
-5(4x-2) = -2(3+6x)<br> what is the answer and how do you get it
Serhud [2]

Answer:

x = 2

Step-by-step explanation:

-5(4x - 2) = -2(3 + 6x)

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10 = -6 + 8x                        Add 20x to both sides

16 = 8x                                Add 6 to both sides

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Answer:

Step-by-step explanation:

If you would like to find the x-intercepts of the function f(x) = - 2 * x^2 - 3 * x + 20, you can calculate this using the following steps:

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