All categories

3 years ago

*WILL GIVE BRAINLY PLS HELP."

Mathematics

1 answer:

coldgirl [10]3 years ago

6 0

Answer:

y = 0.55x + 1.5

Step-by-step explanation:

Slope is 0.55 and y-intercept is 1.5

You might be interested in

Through (-3,-5) and (0,-2)

GarryVolchara [31]

Answer:

Step-by-step explanation:

I think your doing slope, so...

-2 - - 5 3

------------------ = --------------- = 1

0 - - 3 3

(simplifyed)

7 0

4 years ago

Please help! Thanks!

vovangra [49]

The answer is 2. I hope this helps.

3 0

3 years ago

Read 2 more answers

Suppose you want to eat lunch at a popular restaurant. The restaurant does not take reservations, so there is usually a waiting

grin007 [14]

Answer:

a) $z_1 =\frac{20-19}{4} =0.25$

$z_2 =\frac{15-19}{4} =-1$

And we can use the complement rule and we got:

$P(z>0.25)=1-P(z$

$P(z>-1)=1-P(z$

And replacing we got:

$P(X >20| X>15)= \frac{0.401}{0.841}= 0.477$

b) $z_1 =\frac{20-19}{4} =0.25$

$z_2 =\frac{18-19}{4} =-0.25$

And we can use the complement rule and we got:

$P(z>0.25)=1-P(z$

$P(z>-0.25)=1-P(z$

And replacing we got:

$P(X >20| X>18)= \frac{0.401}{0.599}= 0.669$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the length of time waiting to be seated of a population, and for this case we know the distribution for X is given by:

$X \sim N(19,4.0)$