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3 years ago

Please Help Part C Final Part Thanks

Mathematics

2 answers:

Bas_tet [7]3 years ago

5 0

Answer:

your gay

Step-by-step explanation:

alexandr402 [8]3 years ago

4 0

3 blue + 3 yellow = 6 total marbles.

The probability of picking a blue one first would be 3/6 ( 3 blue out of 6 total marbles).

3/6 reduces to 1/2.

After picking the first marble, there would be 5 marbles left in the bag.

The probability of picking a yellow one would be 3/5 ( 3 yellow and 5 total marbles left).

The probability of picking a blue then a yellow then becomes:

1/2 x 3/5 = 3/10 = 0.30 = 30%

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a sample of 412 adults showed that 293 of them are connected the the internet from home. Construct and interpret a 90% confidenc

Anna [14]

Answer:

CI = (0.674, 0.748)

Step-by-step explanation:

The confidence interval of a proportion is:

CI = p ± SE × CV,

where p is the proportion, SE is the standard error, and CV is the critical value (either a t-score or a z-score).

We already know the proportion:

p = 293/412

p = 0.711

But we need to find the standard error and the critical value.

The standard error is:

SE = √(p (1 − p) / n)

SE = √(0.711 × (1 − 0.711) / 412)

SE = 0.0223

To find the critical value, we must first find the alpha level and the degrees of freedom.

The alpha level for a 90% confidence interval is:

α = (1 − 0.90) / 2 = 0.05

The degrees of freedom is one less than the sample size:

df = 412 − 1 = 411

Since df > 30, we can approximate this with a normal distribution.

If we look up the alpha level in a z score table or with a calculator, we find the z-score is 1.645. That's our critical value. CV = 1.645.

Now we can find the confidence interval:

CI = 0.711 ± 0.0223 * 1.645

CI = 0.711 ± 0.0367

CI = (0.674, 0.748)

So we are 90% confident that the proportion of adults connected to the internet from home is between 0.674 and 0.748.

5 0

3 years ago

Is -(-0.5x + 10) equivalent to 1/2x + 10?

dolphi86 [110]

Answer: idk

Step-by-step explanation: i

8 0

3 years ago

Read 2 more answers

Amir can travel 121.72 miles on 6.8 gallons of gas.

ASHA 777 [7]

The unit consumption of gas can be obtained by dividing the total distance traveled in miles by the total gallons of gas consumed by the trip. This is shown below:

121.72 miles / 6.8 gallons = 17.9

Therefore, on a gallon of gas, Amir can travel 17.9 miles, which is letter B among the choices.

4 0

3 years ago

If grandma lives in Palm Springs which is 100 miles away. How long does it take to get there if you drive a constant speed of 50

alexira [117]

Answer:

Step-by-step explanation:

i dont know unit rate 50 miles every hour

50/1

it take 2 hours to get to palmm springs

8 0

3 years ago

Find ModifyingBelow lim With h right arrow 0limh→0StartFraction f (x plus h )minus f (x )Over h EndFraction f(x+h)−f(x) h for th

UkoKoshka [18]

Answer:

Answer is 88

Step-by-step explanation:

We have Given function

$f(x)=88x-77$

we have to find f'(x) at x=3 Where f'(x) shows derivative of the given function.

This means we need

f'(3)=?

So By definition of the Derivative that is

$f'(x)=lim(h---->0)(f(x+h)-f(x))/h$

so this our definition of derivative of the function

Now We have to find out at x=3, So By putting x =3 in definition ,We get

f'(3)=lim(h---->0)(f(3+h)-f(3))/h

Here lim(h--->0) means limit h approaches to zero(right arrow 0limh→0)

=lim(h---->0)((88(3+h)-77))-(88(3)-77))/h

=lim(h---->0)((264+88h-77)-264+77)/h

=lim(h----->0)(264+88h-77-264+77)/h

now by performing simple arithematic we get result

f'(3) = lim(h---->0)(88h/h)

f('3) = lim(h---->0)(88)

here we use law of the limit we limit of the constant is that constant

lim(h----->0)c=c

f'(3)=88

So this our answer

4 0

3 years ago