Ask question

Ask question

All categories

3 years ago

14

(18 points) The slope is The y-intercept is

1 answer:

mel-nik [20]3 years ago

3 0

The slope is -4/5 and the y intercept is -2

You might be interested in

According to the MIT Airline Data Project, American Airlines controlled 15.5% of the domestic market during a recent year. A ran

andrey2020 [161]

Answer:

$P(20$

And we can use the z score given by:

$z = \frac{x-\mu}{\sigma}$

And if we find the z score for 20 and 25 we got:

$z = \frac{20-19.375}{4.046}=0.154$

$z = \frac{25-19.375}{4.046}=1.390$

And we have the probability given by:

$P(20$

And we can find this probbaility with this difference:

$P(0.154< Z$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=125, p=0.155)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

We need to check the conditions in order to use the normal approximation.

$np=125*0.155=19.375 \geq 10$

$n(1-p)=125*(1-0.155)=105.625 \geq 10$

So we see that we satisfy the conditions and then we can apply the approximation.

If we appply the approximation the new mean and standard deviation are:

$E(X)=np=125*0.155=19.375$

$\sigma=\sqrt{np(1-p)}=\sqrt{125*0.155(1-0.155)}=4.046$

So then we can approximate the random variable like this:

$X\sim N(\mu = 19.375 , \sigma=4.046)$

And we are interested on this probability:

$P(20$

And we can use the z score given by:

$z = \frac{x-\mu}{\sigma}$

And if we find the z score for 20 and 25 we got:

$z = \frac{20-19.375}{4.046}=0.154$

$z = \frac{25-19.375}{4.046}=1.390$

And we have the probability given by:

$P(20$

And we can find this probbaility with this difference:

$P(0.154< Z$

4 0

3 years ago

What is $4.32 • 20= ???

jeyben [28]

The answer should be 84. I hope that helped

8 0

3 years ago

On a winter morning, the temperature in pittsburgh is -13

zhannawk [14.2K]

That’s nice to know i guess? i don’t know where you’re trying to go with this-

4 0

3 years ago

Martha os taking the bus into work 3 times a week (12 times a month) for $4.50 a day. Would it be better to continue to pay dail

pishuonlain [190]

Answer:

A) Pay daily

Step-by-step explanation:

The monthly pass is $59 and buying it daily for an entire month costs $54

$4.50 x 12 = 54

59-54=5

cheaper to pay daily

A.)

6 0

4 years ago

Read 2 more answers

Steve prepreformed the chemistry experiment in which divided 5/8 of a box of baking soda evenly among the five bottles he then a

weeeeeb [17]

Answer:

$\mathbf{ \dfrac{1}{8} \ box}$

Step-by-step explanation:

Given that:

Steve divided 5/8 of a box evenly among 5 bottles. To determine the amount of baking soda added;

Then, mathematically:

$=\dfrac{5}{8} \ box \div 5$

$= \dfrac{5}{8} \ box \times \dfrac{1}{5}$

$\mathbf{= \dfrac{1}{8} \ box}$

3 0

3 years ago