An ecologist studying starfish populations collects the following data on randomly selected 1-meter by 1-meter plots on a rocky coastline
--The number of starfish in the plot
--The total weight of starfish in the plot
--The percentage of area in the plot that is covered by barnacles (food for starfish)
--Whether or not the plot is underwater midway between high and low tide
How many of these measurements can be treated as contituous random variables and how many as discrete random variables?

Answers

Answer 1

Answer:

2 continous random variable

1 discrete random variable

A fourth variable that cannot be treated as random.

Step-by-step explanation:

A continous random variable differs from a discrete variable in a few ways ; Continous random variables are usually uncountable as they can take up an infinite number of values within an interval. These variables may include those obtained by measurement such as height, weight, distance and so many other decimal yielding values. Discrete random variables in the other hand are countable and values can be obtained by counting as successive values are usually whole numbers.

In the scenario above ;

The weight of starfish and percentage area on the plot are continous variables while the number of starfish is discrete.

Whether or not plot is underway or midway between high and low tide isn't a random variable.


Related Questions

What is the sum in simplest form?
4.5 + 1 3/5

Answers

Answer: 6 1/10

Step-by-step explanation:

You spin a spinner with 4 sections numbered 1-4and then flip a coin. List all the possible outcomes with a tree diagram.

Answers

Answer:

/ heads

1

\ tails

/ heads

2

\ tails

/ heads

3

\ tails

/ heads

4

\ tails

A line on a coordinate plane has a y-intercept of 5 and a slope of 3.what is the slope intercept form of the line?

Answers

Answer:

y = 3x + 5

Step-by-step explanation:

Slope intercept form is

y = mx + b

where m is the slope and b is the y-intercept

Given m = 3 and b = 5

y = 3x + 5

In a word game, 1 letter is worth 1 point. This dot plot shows the scores for 20 common words. What is the first quartile (Q1)?

Answers

Answer:

5

Step-by-step explanation:

ILL GIVE BRAINLIEST

Answers

Answer:

I can't read the question it's too blurry

PLEASE HELP































I will give away 100 points to right answer

Answers

Answer:

48 yd^2

Step-by-step explanation:

We can cut this shape into 4 squares which areas are all 4x3 or 12. Therefore, we add 12 four times to get 48.

If this helps please mark as brainliest

Find the volume of the prism.
1.2 cm
1.8 cm
2 cm
2.3 cm
The volume is
cubic centimeters.

Answers

Answer:

Volume of prism = 6.3 cm³

Step-by-step explanation:

Given:

Dimensions of parallels line = 2.3 and 1.2 cm

Height of prism = 1.8 cm

Width of prism = 2 cm

Find:

Volume of prism

Computation:

Volume of prism = Area of base x Width

Volume of prism = [(1/2)(sum of parallels line)(Height)]Width

Volume of prism = [(1/2)(2.3 + 1.2)(1.8)]2

Volume of prism = [(1/2)(3.5)(1.8)]2

Volume of prism = [(3.5)(1.8)]

Volume of prism = 6.3 cm³

What is (3/2) raised to the power of -3?
What is (3/2)^-3?

Answers

8/27, the negative sign means the flip the number and 2/3 to the third power is 8/27
Answer:

8/27
Alternate form -
0.296 or (2/3)^3

Explanation:

Either one of these

In a mathematics class, half of the students scored 52 on an achievement test. With the exception
of a few students who scored 76, the remaining students scored 57. Which of the following
statements is true about the distribution of scores?
A. The mean is less than the median.
B. The mean is less than the mode.
C. The mean and the median are the same.
D. The mean is greater than the median.

Answers

Answer:

C. The mean and the median are the same.

Which scenario can be best represented by the equation y = 139x + 200?

Answers

Since you didn't offer potential answer choices, here's a sample answer which would work for this scenario. Using this, you can compare it to the choices that you have to make a decision.

Sample Answer:

Bob opened savings account with $200. Every week since, he has added $139 into it.

( NO LINKS- ) What is the VOLUME of this prism? *
A. 34 inches squared
B. 180 inches cubed
C. 1080 inches cubed
D. 900 inches squared

Answers

Answer:

1080

Step-by-step explanation:

the formula for finding volume is

length x width x height

so 12 x 15 x 6 which is 1080.

Help ill give u brainliest when I can

Answers

Answer:

A)82

b)16807

c)10

d)625

Step-by-step explanation:

a: 3^4 or 81

b 7^5. 16807

c 10^2 or 100

d 5^7 78125

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP


Answers

i’m pretty sure it’s C

*HELP PLEASE*
In circle J with HJK = 146", find the HLK.

A) 214°
B) 73°
C) 292°
D) 46.5°

Answers

Answer:

B. 73°

Step-by-step explanation:

Yessssssssssssssssssssssssssssssssssssssssssssss

The base of an isosceles triangle is 7cm long. Each of the other sides is x cm long. What will be the expression for its perimeter?

Answers

Answer:

P = 2x + 7

Step-by-step explanation:

1. Write two word expressions for each problem using different math vocabulary for each
expression

5d-10​

a/b+2

Answers

Step-by-step explanation:

for the first one

subtract 10 from 5 times a certain number

What is the measure of angle P?

Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.

​m∠P=​ °

Answers

The measurement of angle P in the diagram given in the question is 61.93 °

Trigonometric ratios

The trigonometric ratios which has been proven as regarding right angle triangles are given below:

Sine θ = Opposite / Hypothenus

Cos θ = Adjacent / Hypothenus

Tan θ = Opposite / Adjacent

With above information in mind, we can easily determine the value of angle P in the question. This is illustrated below:

How to determine the value of angle P

From the question given above, the following data were obtained:

Hypothenus = 17 cmOpposite = 15 cmAdjacent = 8 cmAngle P =?

Sine θ = Opposite / Hypothenus

Sine P = 15 / 17

Sine P = 0.8824

Take the inverse of sine

P = Sine⁻¹ 0.8824

P = 61.93 °

Thus, the value of angle P in the diagram is 61.93 °

Learn more about trigonometric ratios:

https://brainly.com/question/26719838

#SPJ1

3 3/5 divided by 2 1/2

Answers

Answer:

ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Step-by-step explanation:

ahhhhhhhhhhhhhhhhhhhhhhhhh

answ

Answer:

Use this link

Step-by-step explanation:

https://www.calculatorsoup.com/calculators/math/mixednumbers.php copy and paste

Find the midpoint between these points.
(1,3) (5.1)
someone please help asap !!!

Answers

Answer:SOLUTION

The midpoint for two points P=(px,py) and Q=(qx,qy) is M=(px+qx2,py+qy2).

We have that px=1, py=3, qx=5, qy=1.

Thus, M=(1+52,3+12)=(3,2).

ANSWER

M=(3,2)A

Step-by-step explanation:

Answer:

The midpoint is (3, 2)

Step-by-step explanation:

To find the x-coordinate of the midpoint, average the x-coordinates 1 and 5:

          1 + 5

xm = ----------- = 3

              2

y-coordinate:

          1 + 3

ym = ----------- = 2

              2

The midpoint is (3, 2)

You accumulated a balance of $2,300 on your credit card that carries an interest rate of 17%. You can't afford to pay the $2,300 all at once, but you can pay the minimum payment, which is 2% per month or $25, whichever is greater. What is the balance on your card after 5 years?

Answers

Answer:

$1,591.67

Step-by-step explanation:

The computation of the balance after 5 years is shown below:

Given that

Accumulated Balance on Credit Card = P = $2,300

r = Monthly interest amount = 17% ÷ 12 = 1.41666667%

M = Minimum payment = 2%

Now  

Balance on Credit Card after t year = P × (1+r) ×(1-M)

= $2,300 × (1+1.41666667%)^t × (1 - 2%)^t

= $2,300 × (0.993883337)^t

SO,

Balance on Credit Card after 5 years is

= $2,300 × (0.993883337)^60

= $2,300 × 0.692029437

= $1,591.66771

= $1,591.67

Complete the square to write each equation in vertex form. Then, state whether the vertex is a minimum or a maximum and give its coordinates.

Answers

Direction: Opens upCoordinates of the vertex:  (-1, -3)Vertex: -3The vertex is a minimumAxis of symmetry: x = -1Vertex form: [tex]y = (x + 1)^{2} -3[/tex]

Answer:

          vertex form:    y = (x + 1)² - 3           the vertex is minimum           coordinates of the vertex:  (-1, -3)

Step-by-step explanation:

[tex]y=x^2+2x-2\\\\y=x^2+2x+1-1-2\\\\\bold{y=(x+1)^2-3}[/tex]

a = 1 > 0  ← it means the parabla opens up, so, the vertex is minimum

The vertex form is  y = a(x - h)² + k, where (h, k) is the vertex

So, from  y = (x + 1)² - 3   the vertex is:  (-1, -3)

Amy Beth found a new pair of shoes that were 30% off the original price. The original price was $60. How much did she save?

Answers

10% of $60 is $6. $6•3=$18. From there subtract $18 from $60... hope this helps :)

Find the value of x...........

Answers

Answer:

x = 7°

Step-by-step explanation:

(8x + 6)° + 118° = 180°

8x = 56°

x = 7°

please help me!!10points

Answers

Answer:

167 feet

Step-by-step explanation:

Please see the attached image.

(90-42)°=48°

The tangent of an angle is the opposite side relative to that angle divided by the adjacent side.

tan(48°)=x/150

x=tan(48°)*150

x≈167

Answer: 167 feet

is the following relation a function explain. (1,3) (1,0), (1,-2) (1,8)

Answers

Yes it is Bc no matter what y values are given, x always has to equal 1.

9514 1404 393

Answer:

  NO

Step-by-step explanation:

If input values are repeated, the relation is not a function. A function has only one output value for any input value.

Here, an input of 1 has 4 output values—not a function.


Please help me on this

Answers

the first one is A  

the second one is D

none of the above - correct answer is root 133. there has to be a typo I think. if they force you to choose do C. -i give the props to the other guy who answerd this question

You have just received your first paycheck of $4,400 from your new job. You visit the dealership with your friend in search of a car. You see a a used car for $4000. The manager tell you that he will give you a discount of 50 percent. When you get home, your parents tell you that they will pay 50 % of the remaining balance.

You are excited when your friend tell you that you will get the car for "free". You will not have to pay any of your own money for the car?

Answer the questions below by showing your work for each question. Answer must be in full sentence.

a) Is your friend correct in assuming that you will not have to pay any of your own money for the car? Why or why not. Proof it.

b) How much if any of your own money will you have to pay for the car?

Skip to navigation
Pls answer my question on a page pls because the files don't work on this computer

Answers

He is not correct. You buy a car for 4,000. You get a 50% which leaves you to owe 2,000. Parents say they will pay 50% of remaking balance and that will leave you owing 1,000.

Find the area of the kite.
6
2
10
16
A=
square units

Answers

Answer:

72

Step-by-step explanation:

The area of a kite is half the product (multiplication) of the diagonals.

Each diagonal has length 12, so A = (1/2)(12)(12) = (1/2)(144) = 72.

Note:  You can also find the area by finding the areas of the 4 right triangles.  By the way, the diagonals are perpendicular, so all 4 triangles are right triangles.

Area of a small triangle:  Area = (1/2)(base)(height)  A = (1/2)(2)(6) = 6.

Area of a larger triangle:  A = (1/2)(10)(6) = 30

Total area: 2 small triangles plus 2 larger triangles A = 2(6) + 2(30) = 72

PLEASE HELP!! I will give brainliest!! New update because the last one had gore posted in it. Please report it is you see that, I’m so sorry.

Drag the key features to the correct location on the image.

Each key feature can be used more than once, but not all key features will be used.
Which key features are present in these three functions?

Answers

Answer:

Step-by-step explanation:

hope this helps

hi plz answer image below may god less you no bot answers plz

Answers

Answer:42.875 feet3

Step-by-step explanation:

Answer:

Step-by-step explanation:

V=a³

=[tex](3\frac{1}{2})^3=42\frac{7}{8}[/tex]in³

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