What is 7894561230 times 7410 equal????

In a survey of 1000 randomly selected adults in the United States, participants were asked what their most favorite and what the

xenn [34]

Answer:

(a) The 95% confidence interval for the population proportion of US adults for whom math was their most favorite subject is (0.204, 0.256).

(b) The 95% confidence interval for the population proportion of US adults for whom math was their least favorite subject is (0.34, 0.40).

Step-by-step explanation:

The questions are:

(a) Construct and interpret a 95% confidence interval for the proportion of US adults for whom math was their most favorite subject.

(b) Construct and interpret a 95% confidence interval for the proportion of US adults for whom math was their least favorite subject. Solution:

(a)

The 95% confidence interval for the population proportion is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Th information provided is:

n = 1000

Number of US adults for whom math was their most favorite subject

= X

= 230

Compute the sample proportion of US adults for whom math was their most favorite subject as follows:

$\hat p=\frac{230}{1000}=0.23$

The critical value of z for 95% confidence interval is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

Compute the 95% confidence interval for the population proportion of US adults for whom math was their most favorite subject as follows:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

$=0.23\pm 1.96\sqrt{\frac{0.23(1-0.23)}{1000}}\\=0.23\pm 0.0261\\=(0.2039, 0.2561)\\\approx (0.204, 0.256)$

Thus, the 95% confidence interval for the population proportion of US adults for whom math was their most favorite subject is (0.204, 0.256).

(b)

The 95% confidence interval for the population proportion is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Th information provided is:

n = 1000

Number of US adults for whom math was their least favorite subject

= X

= 370

Compute the sample proportion of US adults for whom math was their least favorite subject as follows:

$\hat p=\frac{370}{1000}=0.37$

The critical value of z for 95% confidence interval is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

Compute the 95% confidence interval for the population proportion of US adults for whom math was their least favorite subject as follows:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

$=0.37\pm 1.96\sqrt{\frac{0.37(1-0.37)}{1000}}\\=0.37\pm 0.0299\\=(0.3401, 0.3999)\\\approx (0.34, 0.40)$

Thus, the 95% confidence interval for the population proportion of US adults for whom math was their least favorite subject is (0.34, 0.40).

8 0

3 years ago

I need help ASAP will mark the brainliest

MatroZZZ [7]

Answer:

The second answer

Step-by-step explanation:

Hope this helps dude

7 0

3 years ago

Read 2 more answers

Which expression is equivalent to 2(c+7)-18x+4/5

mestny [16]

Answer:

2c - 18x + 74/5

Step-by-step explanation:

Step 1: Distribute

2(c + 7) - 18x + 4/5

(2 * c) + (2 * 7) - 18x + 4/5

2c + 14 - 18x + 4/5

Step 2: Combine like terms

2c + 14 - 18x + 4/5

2c - 18x + 74/5

Answer: 2c - 18x + 74/5

3 0

3 years ago

What is the solution to the system of equations graphed below?

Mariulka [41]

Answer:

it is (-4,8)

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

Write the equation of the line whose slope is m=−9 and y-intercept is (0,5) in Slope Intercept Form.

vovangra [49]

Answer:

$\displaystyle y = -9x + 5$

Step-by-step explanation:

Plug the coordinates into the Slope-Intercept Formula, $\displaystyle y = mx + b:$

5 = 0 + b

$\displaystyle 5 = b \\ \\ y = -9x + 5$

I am joyous to assist you anytime.

7 0

4 years ago