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3 years ago

Guys help meeee im timed

Mathematics

1 answer:

vitfil [10]3 years ago

3 0

They do (i think). im like 87% sure so like do what you will with that information

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According to a survey conducted by the U.S. Department of Health and Human Services, about 50% of U.S. adults age 18 and older a

liraira [26]

Using a confidence interval, we have that:

a) The range is from 48.8% to 51.2%.

b) Between 125,000 and 131,000 adults are registered organ donors.

<h3>What is a confidence interval?</h3>

A confidence interval is given by the <u>estimate plus/minus the margin of error</u>.

For this problem, we have that:

The estimate is of 50%.

The margin of error is of 1.2%.

The bounds of the range are given as follows:

50% - 1.2% = 48.8%.

50% + 1.2% = 51.2%.

Hence the range is from 48.8% to 51.2%.

<h3>What are the total numbers?</h3>

We have to find <u>48.8% and 51.2% of 255,200,373</u>, hence:

0.488 x 255,200,373 = 124,537,782.

0.512 x 255,200,373 = 130,662,591.

Rounded to hundredth thousand, between 125,000 and 131,000 adults are registered organ donors.

More can be learned about confidence intervals at brainly.com/question/25890103

#SPJ1

7 0

1 year ago

Please help!!!! Whoever answers these three questions correctly first will get brainliest answer!!!!!

inna [77]

4. -8
5. 24
6. I can't see it properly so if it's ÷ answer is 9 if it's - answer is -70

4 0

2 years ago

Read 2 more answers

A line passes through the point (-8, 2) and has a slope of -5/4.

UNO [17]

Answer:

y=-5/4x-8

Step-by-step explanation:

2=-5/4(-8)+b

2=10+b

2-10=10-10b

-8=b

8 0

3 years ago

Me.shelton wants to learn to play the guitar. She found a guitar that was $95 and on discount for 15% off the $95. Sales tax on

Viefleur [7K]

Hello! I can help you with this! So there is a $95 guitar for 15% off. That means Ms. Shelton would still have to pay 85% of the $95. To find the new sale price of the guitar, let’s multiply. 95 * 0.85 is 80.75. $80.75 is the new sale price of the guitar. However, not let’s add the sales tax to find the total price of the guitar. Multiply by 1.065 or 106.5%, because hat would give you all of the total price. 80.75 * 1.065 is 85.998 and other numbers behind it or 86.00 when rounded to the nearest hundredth. The total price Ms. Shelton will pay for the guitar is $86.

6 0

3 years ago

Consumers are spending more on music from digital sources than they do on CDs. Purchases of streamed music from services such as

hodyreva [135]

Answer:

(a) (i) 3.7 billion

(ii) $ 4.6 billion

(b) $ 0.3 billion/year

Step-by-step explanation:

Given equation that shows the amount( in billions of dollar ) spent by consumers on streamed music after t years since 2012,

f(t) = 3.7 + 0.84 ln(t + 1) ,

(a)

(i) for 2012, t = 0,

So, the amount spent by consumers on streamed music in 2012,

f(0) = 3.7 + 0.84 ln (1)

= 3.7 + 0.84(0)

= $ 3.7 billion

(ii) for 2014, t = 2 years,

So, the amount spent by consumers on streamed music in 2014,

f(0) = 3.7 + 0.84 ln (1+2)

= 3.7 + 0.84 ln(3)

= 3.7 + 0.9228

= 4.6228 billion

≈ $ 4.6 billion

(b) ∵ f(t) = 3.7 + 0.84 ln(t + 1),

Differentiating with respect to t,

$f'(t) = 0.84 \frac{1}{t+1}$

For t = 2 years,

$f'(2) = 0.84 \frac{1}{2+1}=\frac{0.84}{3}=0.28\approx 0.3$

Hence, the amount spent by consumers on streamed music is growing with the rate of $ 0.3 billion/year in 2014

6 0

2 years ago