Which graph represents a proportional relationship? Explain. Graph A Graph B Graph C x y graph x y graph

Find the quotient 5 2/3 ÷ 3/5 leave answer as a mixed number in simplest form.

Ainat [17]

Answer:

$9\frac{4}{9}$

Step-by-step explanation:

Exact from:

$\frac{85}{9}$

Decimal Form:

9.4

Mixed Number Form:

$9\frac{4}{9}$

Give me Brainllest

8 0

3 years ago

Circle A has a circumference of 8/3 m. Circle B has a diameter that is 3/2 times as long as Circle A’s diameter. What is the cir

patriot [66]

Answer:

the answer is 4

Step-by-step explanation:

if my calculations are right

6 0

4 years ago

The National Center for Education Statistics reported that 47% of college students work to pay for tuition and livingexpenses. A

8090 [49]

Answer:

a) The 95% confidence interval for the population proportion of college students who work to pay for tuition andliving expenses is (0.4239, 0.5161).

b) The 99% confidence interval for the population proportion of college students who work to pay for tuition and living expenses is (0.4094, 0.5306).

c)The margin of error increases as the confidence level increases.

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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 450, p = 0.47$

a) Provide a 95% confidence interval for the population proportion of college students who work to pay for tuition andliving expenses.

95% confidence interval

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.47 - 1.96\sqrt{\frac{0.47*0.53}{450}} = 0.4239$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.47 + 1.96\sqrt{\frac{0.47*0.53}{450}}{119}} = 0.5161$

The 95% confidence interval for the population proportion of college students who work to pay for tuition andliving expenses is (0.4239, 0.5161).

b. Provide a 99% confidence interval for the population proportion of college students who work to pay for tuition andliving expenses.

95% confidence interval

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.47 - 2.575\sqrt{\frac{0.47*0.53}{450}} = 0.4094$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.47 + 2.575\sqrt{\frac{0.47*0.53}{450}}{119}} = 0.5306$

The 99% confidence interval for the population proportion of college students who work to pay for tuition and living expenses is (0.4094, 0.5306).

c What happens to the margin of error as the conﬁdence is increased from 95% to 99%?

The margin of error is the subtraction of the upper end by the lower end of the interval, divided by 2. So

95% confidence interval

$M = \frac{(0.5161 - 0.4239)}{2} = 0.0461$

99% confidence interval

$M = \frac{(0.5306 - 0.4094)}{2} = 0.0606$

The margin of error increases as the confidence level increases.

8 0

3 years ago

I need help fast!!

topjm [15]

Answer:

A:77 divided by 4

Step-by-step explanation:

77 divided by 4 = 19.25 and 19.25=19 1/4

7 0

4 years ago

Ms Jenkins art class has 35 students in art class.7 of the 35 students are girls.What percentage of the class is made up of boys

lubasha [3.4K]

28 boys I think ‍♀️.

3 0

3 years ago

Which graph represents a proportional​ relationship? Explain. Graph A Graph B Graph C x y graph x y graph

Which graph represents a proportional relationship? Explain. Graph A Graph B Graph C x y graph x y graph