3 years ago

QUESTION 2

Mathematics

1 answer:

stiv31 [10]3 years ago

3 0

The first quartile would be 48.5

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-24°F

Step-by-step explanation:

-18°F + 13°F - 19°F

= -5°F - 19°F

= -24°F

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The work of a student to solve a set of equations is shown:

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In which step did the student first make an error?

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-2x + y = 5 <br><br> what does y equal and how did you solve it?

Olin [163]

Answer:

y=2x+5

Step-by-step explanation:

Let's solve for y.

−2x+y=5

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Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ.

mart [117]

Answer:

$\mu -2\sigma = 915.428 - 2* 22.87=869.69$

$\mu +2\sigma = 915.428 + 2* 22.87=961.17$

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

Step-by-step explanation:

We can assume that the variable of interst X is distributed with a binomial distribution and we can use the normal approximation.

For this case the mean would be given by:

$E(X) = np = 2136 *(\frac{3}{7})= 915.428$

And the standard deviation would be:

$\sigma = \sqrt{2136*(\frac{3}{7}) (1-\frac{3}{7})} =22.87$

And if we find the limits we got:

$\mu -2\sigma = 915.428 - 2* 22.87=869.69$

$\mu +2\sigma = 915.428 + 2* 22.87=961.17$

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

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3 years ago