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3 years ago

8

Hurry!!! Determine whether the random variable described is discrete or continuous. The time of a randomly chosen city employee

to get to work.

2 answers:

kakasveta [241]3 years ago

6 0

The answer should be discrete

jonny [76]3 years ago

4 0

Discrete is the correct answer because it’s random

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Which line is a linear model for the data? <br><br><br>Uploading pictures

dmitriy555 [2]

Answer:

C

Step-by-step explanation:

You will probably find that line C has the best correlation with the data plotted.

In general, the "line of best fit" will minimize the sum of squares of vertical distances between data points and the line. The line with the smallest vertical differences is the line in graph C.

_____

The line in graph D goes through several data points, so the vertical distance from the point to the line is zero for those. However, the remaining points are farther from the line than they are in graph C. The measure of fit is the square of the distance, so the penalty for larger distances is fairly severe.

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3 years ago

There are two traffic lights on the route used by a certain individual to go from home to work. Let E denote the event that the

uranmaximum [27]

Answer with Step-by-step explanation:

We are given that

E=Event denote the event that the individual must stop at the first light

F=Event denote the event that the individual must stop at the second light

P(E)=0.4

P(F)=0.2

$P(E\cap F)=0.15$

a.We have to find the probability that the individual must stop at atleast one light.

We know that

$P(E\cup F)=P(E)+P(F)-P(E\cap F)$

Substitute the value in the given formula then, we get

$P(E\cup F)=0.4+0.2-0.15=0.45$

$P(E\cup F)=0.45$

b. $P(E\cup F)'=1-P(E\cup F)$

$P(E\cup F)'=1-0.45=0.55$

c.We have to find the probability that the individual must stop at exactly one of the two lights.

P(must stop at exactly one of the two lights)= $P(E\cup F)-P(E\cap F)=0.45-0.15=0.3$

P(must stop at exactly one of the two lights)=0.3

d.We have to find the probability that the individual must stop just at the first light.

P(must stop juts at the first light)= $P(E)-P(E\cap F)$

P(must stop juts at the first light)=0.4-0.15=0.25

8 0

3 years ago

one side of a rectangle is 4cm shorter than three times the other side, find the side lengths if the area is 319

MakcuM [25]

I hope this helps you

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3 years ago

PLEASE HELP ASAP!!!! 100% CORRECT ANSWERS ONLY PLEASE!!!! I CANNOT RETAKE THIS

inn [45]

A=π(4)2=π·42≈<em>16pi ft^2</em>

8 0

3 years ago

Read 2 more answers

Find the value of tα/2 when n = 18 for the 99% confidence interval for the mean.

lina2011 [118]

We have to find the critical t value for 99% confidence level and sample size of 18.

Degrees of freedom = n - 1 = 17

α = 1 - 0.99 = 0.01
α/2 = 0.01/2 = 0.005

So, from the t table we have to check the value against the column 0.005 and for 17 degrees of freedom.

This value comes out to be 2.898.

So, <span>tα/2</span> = 2.898

7 0

3 years ago