Ask question

Ask question

All categories

3 years ago

15

Can you guys teach me how to do this??

1 answer:

Vadim26 [7]3 years ago

4 0

The usual margin of error we strive for is a 95% probability that our estimate is within the margin. Assuming a normal distribution (and that we have a big enough sample not to worry about t tests) that corresponds to between minus and plus two standard deviations of the mean (remember the 68-95-99.7 rule). So our margin of error is plus or minus two standard deviations.

Answer: ±2%

You might be interested in

What equation represents the relationship between“p” and “q” shown in the table?

EleoNora [17]

Answer:

$q=10p$

Step-by-step explanation:

According to the given table, the variables have a linear relation, because there's a constant change involved.

Notice that p-variable increases by one unit, while q-variable increases by 10 units. That means the ratio of change is

$r=\frac{\Delta q}{\Delta p}=\frac{10}{1}$

Then, we use one pair of elements, like (3,30), and the point-slope formula to find the equations.

$q-q_{1} =m(p-p_{1} )\\q-30=10(p-3)\\q=10p-30+30\\q=10p$

Therfore, the equation that represents the table is $q=10p$

7 0

4 years ago

Read 2 more answers

Which equation represents a parabola that has a focus of (0, 0) and a directrix of y=−6 ? x² = 12y x2=12(y+3) x2=−3(y+3) x2=−3y

Svetlanka [38]

Did you get the answer?

3 0

3 years ago

Read 2 more answers

GIVING BRAINLIEST + STARS <br><br><br> I know A to B is 20m/s but what is C to D?

Setler79 [48]

Answer:

See below ↓↓

Step-by-step explanation:

<u>A to B</u>

Avg. speed = Distance covered / Time taken
Avg. speed = 200 m / 10 s
Avg. speed = <u>20 m/s</u>

<u></u>

<u>C to D</u>

Avg. speed = Distance covered / Time taken
Avg. speed = (500 - 200) m / (60 - 30) s
Avg. speed = 300 m / 30 s
Avg. speed = <u>10 m/s</u>

3 0

3 years ago

What is the product of all constants $k$ such that the quadratic $x^2 + kx +15$ can be factored in the form $(x+a)(x+b)$, where

gregori [183]

Thats insane tho!

Whats ur aops class that you take?

8 0

3 years ago

Of the pets in the pet show, 10/12 are cats. 6/10 of the cats are calico cats. What fraction of the cats are calico cats?

Lera25 [3.4K]

Answer:

6/10, simplified 3/5

Step-by-step explanation:

kinda tricky, but the fraction is stated right out.

8 0

3 years ago

Read 2 more answers