Ask question

Ask question

All categories

1 year ago

6

Which choices are equivalent to the expression below? check all that apply. square root of 6 * square root of 10A. 2 sqrt 15b. s

qrt 16c. sqrt 4x sqrt 15d. 60e. 20f. sqrt 60

1 answer:

Anon25 [30]1 year ago

6 0

$\begin{gathered} \sqrt[]{6}\times\sqrt[]{10} \\ \sqrt[]{60} \\ \sqrt[]{4\times15} \\ \sqrt[]{4}\times\sqrt[]{15} \\ 2\sqrt[]{15} \end{gathered}$

Hence, the correct options are Option A and Option C

You might be interested in

It seems to you that fewer than half of people who are registered voters in the City of Madison do in fact vote when there is an

Ad libitum [116K]

Answer:

a) Going to public places like restaurants, parks, theaters, etc in Madison and asking voters.

b) The 80% CI to estimate the true proportion of registered voters in the City of Madison who vote in non-presidential elections is (0.5533, 0.6667).

c) We are 80% sure that our confidence interval contains the true proportion of registered voters in the City of Madison who vote in non-presidential elections.

d) The lower limit of the interval is higher than 0.5. This means that it does seem that MORE than half of registered voters in the City of Madison vote in non-presidential elections.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

(a) How might a simple random sample have been gathered?

Going to public places like restaurants, parks, theaters, etc in Madison and asking voters.

(b) Construct an 80% CI to estimate the true proportion of registered voters in the City of Madison who vote in non-presidential elections.

You take an SRS of 200 registered voters in the City of Madison, and discover that 122 of them voted in the last non-presidential election. This means that $n = 200, \pi = \frac{122}{200} = 0.61$ .

We want to build an 80% CI, so $\alpha = 0.20$ , z is the value of Z that has a pvalue of $1 - \frac{0.20}{2} = 0.90[tex], so [tex]z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{200}} = 0.61 - 1.645\sqrt{\frac{0.61*0.39}{200}} = 0.5533$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{200}} = 0.61 + 1.645\sqrt{\frac{0.61*0.39}{200}} = 0.6667$

The 80% CI to estimate the true proportion of registered voters in the City of Madison who vote in non-presidential elections is (0.5533, 0.6667).

(c) Interpret the interval you created in part (b).

We are 80% sure that our confidence interval contains the true proportion of registered voters in the City of Madison who vote in non-presidential elections.

(d) Based on your CI, does it seem that fewer than half of registered voters in the City of Madison vote in non-presidential elections? Explain.

The lower limit of the interval is higher than 0.5. This means that it does seem that MORE than half of registered voters in the City of Madison vote in non-presidential elections.

4 0

3 years ago

Write the equation of<br> the line that passes<br> through (2,-4) &<br> has a slope of -1.

zzz [600]

Answer:

y= -1x-6

Step-by-step explanation:

The equation would be y=mx+b

M= slope, and B=y-intercept

If you look at a graph and use the slope to get to the Y-intercept you'll see that it is -6, and so you would just plug that into the equation along with the slope :)

7 0

3 years ago

You have 8 cups of flour. A recipe calls for 2/3cup of flour. Another recipe calls for 1/4 cup of flour. How much flour do you h

Sonja [21]

There will be 5 more because 8-2-1 =5

6 0

3 years ago

Each week Jessica earns $12 doing yard work. She saves 40% of the money she makes. A. How much does she save each week? B. How m

Oliga [24]

She saves 4.8$ and she spends 7.20$ each week

7 0

3 years ago

Which of the following equations has the solution x= all real numbers?

Marysya12 [62]

The answer is C
4(3-x)+6x=3x+12-x All real numbers are solutions.

5 0

3 years ago