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3 years ago

Can someone help me answer this question? I think it is the 2nd option but not sure

Mathematics

1 answer:

Elis [28]3 years ago

3 0

The top right one. There is non indication of a clear pattern or proportional values.

Hope that helps!

:D®

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According to Reuters, a survey undertaken by the National Center for Health Statistics revealed that about 25% of U.S. household

ddd [48]

Answer:

a) P=0.8

b) P=0.67

c) P=0.05

d) P=0.33

e) P=0.45

Step-by-step explanation:

a. What is the probability that the household has only a cell phone and has high-speed Internet?

This probability is stated in the question: "Suppose of U.S. households having only a cell phone, 80% have high-speed Internet", so the probability is P=0.8.

$P(C\&I)=0.8$

b. What is the probability that the household has only a cell phone or has high-speed Internet?

This probability is equal to the sum of the probability of having only a cell phone and the probability of having high-speed internet, less the probability of having both (to avoid counting this household twice).

$P(C\,orI\,)=P(C)+P(I)-P(C)*P(I|C)=0.25+0.65-(0.25*0.8)=0.25+0.62-0.20=0.67$

c. What is the probability that the household has only a cell phone and does not have high-speed Internet?

This is equal to the probability of not having high-speed internet given that it has a cell phone (complementaty of the proability of Point (a)) multiplied by the probability of having a cell phone.

$P(C\&\bar I)=P(\bar I|C)*P(C)=(1-P(\I|C))*P(C)=(1-0.8)*0.25 = 0.2*0.25 = 0.05$

d. What is the probability that the household does not have just a cell phone and does not have high-speed Internet?

This probability is complementary of the one calculated in Point (c).

$P(\bar C \,or\, \bar I)=1-P(C\, or\,I)=1-0.67=0.33$

e. What is the probability that the household does not have just a cell phone and does have high-speed Internet?

This is equal to the probability of having high-speed internet less the probability it has both (cell phone and internet).

$P(\bar C\&I)=P(I)-P(I|C)*P(C)=0.65-0.8*0.2=0.65-0.2=0.45$

7 0

4 years ago

(h) when is the particle speeding up? (enter your answer using interval notation.) (2,4)∪(6,8) incorrect: your answer is incorre

OverLord2011 [107]

The position of the particle as function of time is given as
$f(t)=cos( \frac{\pi t}{4} )$

The velocity as function of time is
$v(t)= - \frac{\pi}{4} sin( \frac{\pi t}{4} )$

A graph of f(t) versus t and of v(t) versus t is shown below.
The velocity increases in the intervals t = (2, 6) and t = (10, 14) and with a periodicity of 8.

In the range t = [0, 16], the velocity increases in the interval t = (2,6)∪(10, 14).

Answer: (2,6)∪(10,14)

3 0

4 years ago

Paul received a 12,000 loan from the bank. The bank charges his 6.99% yearly interest rate. 4 years, how much money does Paul ow

andre [41]

Principal amount = 12,000
Annual interest rate (r) = 6.99% = 0.0699
Time (years) = 4 years
Number of installments (t) = 12*4 = 48 months

Monthly payment, A = P/D

Where,
D= {(1+r/12)^t-1}/{r/12*(1+r/12)^t} = {(1+0.0699/12)^48-1}/{0.0699/12(1+0.0699/12)^48} = 42.47

Therefore, A = 12000/42.47 = 282.59

Total payments after 4 years = 282.59*4*12 = 13,564.17

Interest owed = 13,564.17 - 12,000 = 1,564.17

5 0

3 years ago

Read 2 more answers

Determine a rational number in between -2 1/4 and -2.8 justify and graph where it would be on a number line

Nitella [24]

Answer:

Its going to be on the -5, 0 point

Step-by-step explanation:

5 0

3 years ago

I need help with this geometry math assignment I been struggling and I need help on it very fast and it is due today so please h

deff fn [24]

Answer:

One tip: Do the top first

Step-by-step explanation:

4 0

3 years ago