Question 3
Juvenile ground squirrels respond to predators by making alarm calls that can alert others to danger. A biologist conducted a study to investigate how squirrels respond to these alarm calls: run
to burrow or freeze. The biologist played recordings of alarm calls for three samples of ground squirrels, grouped by age, and observed the squirrels' responses. The data for the three age levels
are shown in the table.
Run to Burrow
Freeze
Total
21
18
39
16
24
40
1 to 5 Days Old
6 to 15 Days Old
16 to Zs Days Old
Total
12
7
19
49
49
98
If ground squirrels at different ages respond to the alarm signals in the same proportions, what would be the expected count for 6-to 15-day-old squirrels that freeze?

Answers

Answer 1

Answer:

((19)(49)/98)

Step-by-step explanation:

Answer 2

Answer: C ((40)(49)/98)

Step-by-step explanation: The formula for expected count is (row total)(column total)/table total


Related Questions

Can you slove this 6=2(y+2)

Answers

Answer:

y=1

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

6=2(y+2)

6=(2)(y)+(2)(2)(Distribute)

6=2y+4

Step 2: Flip the equation.

2y+4=6

Step 3: Subtract 4 from both sides.

2y+4−4=6−4

2y=2

Step 4: Divide both sides by 2.

2y/2  2/2

i need tthe answer............

Answers

Answer:

1440

Step-by-step explanation:

you multiply the 40 with the 36, 40x36=1440 because there are 36 groups of 40.

Compare using >is greater than, 2/3 or 9/12

Answers

2/3 > 9/12 because 2/3 is closer to a whole

Answer:

Step-by-step explanation:

i dont know what ur asking but

9/12 > 2/3

The area, A , of triangles is given by the following formula: A = (bh)/(2) .where h is the height of the triangle and b is the length of its base. Find the area of a triangle that has a base of 11 cm and height of 9 cm.

Answers

Answer:

49.5cm²

Step-by-step explanation:

(11x9)/2=99/2=49.5cm²

Which of the following changes is a chemical change?
A ice me

Answers

Answer:

Step-by-step explanation:

The question got caught off. Can't read any of the other examples. I can tell you though that ice melting is a physical change, not a chemical change.

what is the area i will give brianly to first person to answer right

Answers

30

Step-by-step explanation:

just trust me it is right

Answer:

141 is the volume of the cylinder but if your looking for the area then your answer would be 150

Step-by-step explanation:

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Answers

Answer:

the correct answer is b :)))))!!!

Can someone help me with these?

Answers

Answer:

Monday:480 (E)

Tuesday: 125(J)

Step-by-step explanation:

Monday: Volume= L*W*H

12*5*8-480

Tuesday: Volume= E*E*E

5*5*5=125

At the grocery store, marilyn bought 4 apples and 7 oranges. select two ways she could write the ration of apples to oranges.

A. 7:4
B. 4 to 7
C. 4:11
D. 4:7
E. 7 to 4

(they are optional)

Answers

Given:

Number of apples purchased = 4

Number of oranges purchased = 7

To find:

The ratio of apples to oranges in two ways.

Solution:

Ratio of apples to oranges is:

[tex]Ratio=\dfrac{Apples}{Oranges}[/tex]

After substituting the given values, we get

[tex]Ratio=\dfrac{4}{7}[/tex]

[tex]Ratio=4:7[/tex]

[tex]Ratio=4\text{ to }7[/tex]

Therefore, the correct options are B and D.

PLS HELP.
YOU WILL GET A GOOD DEED :)

Answers

Answer:

a) 6 2/5  

b) 13 1/2

Step-by-step explanation:

Have a nice day!

Can I maybe have brainliest?

I forgot it was simplify..

An observer standing on the southern bank of a river sees a tree that is much more than 100 feet downstream on the northern bank of the river. The angle formed by the southern bank and the line from the observer to the tree is 15 ∘. After walking 100 feet downstream, the observer measures the angle formed by the southern bank and the line to the same tree to be 25 ∘. Find the width of the river. (can you show the work please)(also the drawing please)

Answers

Answer:

[tex]63\ \text{ft}[/tex]

Step-by-step explanation:

The distances are shown in the figure

[tex]\tan25^{\circ}=\dfrac{p}{b}\\\Rightarrow p=b\tan25^{\circ}[/tex]

[tex]\tan15^{\circ}=\dfrac{p}{b+100}\\\Rightarrow p=b\tan15^{\circ}+100\tan15^{\circ}\\\Rightarrow b\tan25^{\circ}=b\tan15^{\circ}+100\tan15^{\circ}\\\Rightarrow b=\dfrac{100\tan15^{\circ}}{\tan25^{\circ}-\tan15^{\circ}}\\\Rightarrow b=135.08\ \text{ft}[/tex]

[tex]p=b\tan25^{\circ}=135.08\times\tan25^{\circ}\\\Rightarrow p=62.99\approx 63\ \text{ft}[/tex]

The width of the river is [tex]63\ \text{ft}[/tex].

A rectangular cornfield has a length of 7 kilometers ans an area of 63 square kilometers.

a.What is the width of the cornfield? <_______________________.
b.What will be the area if the length and width are doubled? <____________________.

Answers

Answer:

a) 441

b) 1008

Step-by-step explanation:

a) 7x63 = 441

b)

 63 + 41 = 504

 504 x 2 = 1008

When we use the SPDC model, we always include the following EXCEPT:

A. Validate all the conditions: Random, Independence and Normality

B. Identify cause-and-effect

C. Conclude on the p-value vs. the significance level

D. Identify the population and defining the true parameter

Answers

b.!!!!!! !!!!
that’s the answer

A 20ft ladder leans up against the wall. if the ladder is 3ft from the wall, what angle does the ladder make with the ground

Answers

Answer:

θ ≈ 81.37°

Explanation:

let the angle the ladder makes with the ground be θ

θ = cos⁻¹(3/20)

θ = cos⁻¹(0.15)

θ ≈ 81.37°

what is the average rate of change of h(x) over the interval -13

Answers

The average rate of change of h(x) in the closed interval [ a, b ] is

Here [a, b ] = [ - 2, 2 ], thus
f(b) = f(2) = × 2³ - 2² = 1 - 4 = - 3
f(a) = × (- 2)³ - (- 2)² = - 1 - 4 = - 5
average rate of change = = =

pls helpppp
tysmmmm!!

Answers

oh i just watched a vid for that lol. That question was on it.. here <3  

https://www.you tube.com/watch?v=dQw4w9WgXcQ

I NEED HELP WITH THIS PLEASE HELLP ME!

Answers

Heyyyyyy, use https://www.bartleby.com/  it has helped me out a lot . Its actual tutors/teachers who answer your questions in about 30 minutes !!!!!!!!

Write as a fraction the probability of rolling a 3 on a six-sided die.

Answers

Answer:

1/6 is the probability of rolling a 3

Lucy Liu went shopping at Hollister with her friends together they spent a mean price of $40 on eight sweaters the first step and sweaters cost $50 $55 $30 $35 $39 $40 and $42 how much in dollars does the eighth sweater cost

Answers

Answer:he eighth sweater costs $29

Step-by-step explanation:

Let the price of the eighth sweater be re[presented as X

We know that

Mean Price =Total sum of cost of sweater bought/ Number of sweater'

Plugging in our known values we have that  

40=$50+ $55+ $30+ $35+ $39+ $40 + $42+X  /8

8 X 40 =291 +X

320=291 +X

X =320-291

X=29

Therefore, the eighth sweater costs $29

Answer: 29

Step-by-step explanation:

I got a question and im  anwsering here bc i want the points either way how is this a high school question im in 6th this is a hw problem

What is the value of the expression “three less than the quotient of ten and a number, increased by six” when n = 2?
A. 2
B. -7/4
C. 8
D. 19/2

Answers

Answer: 8

Step-by-step explanation:

Right on edge!

in the year 2001, a person bought a new car for $22000. for each consecutive year after that, the value of the car depreciated by 5%. how much would the car be worth in the year 2005, to the nearest hundred dollars

Answers

Answer:

To the nearest hundred dollars, the car will be worth $17,900 by 2005

Step-by-step explanation:

Firstly, we need to write the depreciation equation

We have this as:

V = I(1 - r)^t

V is the present value which is what we want to calculate

I is the initial value, the amount the cad was bought which is $22,000

r is the rate of change which is 5% = 5/100 = 0.05

t is the time difference which is 2005-2001 = 4

Substituting all these into the depreciation equation, we have it that

V = 22,000(1 -0.05)^4

V = $17,919.1375

To the nearest hundred dollars, that would be;

$17,900

whats the answer to multiply (-3)(7)?

Answers

Answer:

-21

Explanation:

3 · 7 = 21

When any number being multiplied is a negative, the output becomes a negative

-3 · 7 = -21

Answer:

-21

Step-by-step explanation:

7 X 3= 21 and because the 3 is negative you get a negative product which is -21

What is the volume of this prism?

Answers

Answer:

94.88

Step-by-step explanation:

V=Ah

A=5/2x4x2.75

V=27.5x3.45

= 94.875

what fraction is equivalent to 6/8

Answers

Answer:

12/16 sorry if im wrong

Step-by-step explanation:

I need help on this test. Will give Brainliest to whoever answers first! Pt. 6

Answers

I think the answer to 14 is J

I NEED TO PASS SO I CA GO TO A CONCERT AND GET MY PHONE BACKKK I WILL GIVE 15 POINTS!! :)

Answers

Answer:

Step-by-step explanation:

Answer:

x=-5, y= 52

x=-1, y= 12

x=0, y= 2

x=1, y= -8

A train travels 3.5 kilometers on a straight track with a grade of 1º. What
is the vertical rise of the train in that distance?

Answers

Answer:

h

Step-by-step explanation:

I NEED HELP WITH THIS ASAP!!

Answers

The equations are ABC and the word stories are 123

The answers are as followed

C and 1

A and 2

B and 3

Hope this helped and have an amazing day :)

-yO mAmA

Answer:

1st story: 3(x+5) = 17

2nd story: 3x+5 = 17

3rd story: 5x+3 = 17

Simplify the expression.
-10a -
3a

Answers

Answer:

-13a

Step-by-step explanation:

they are like terms so it means they will add each other giving you -13a

:)

Answer:

-13a

Step-by-step explanation:

-10a-3a=13a

hope it helps.

A scatter plot with a line is shown below.

Graph shows numbers from 0 to 10 at increments of 1 on the x axis and number s from 0 to 15 at increments of 1 on the y axis. Scatter plot shows ordered pairs 0, 1 and 1, 1 and 2, 3 and 3, 5 and 4, 6 and 5, 7 and 6, 7 and 7, 8 and 8, 9 and 9, 11 and 10, 15. A line joins ordered pairs 0, 1 and 8, 15.

Which statement is most likely correct about the line?

It can be the line of best fit because it is closest to most data points.
It can be the line of best fit because it passes through all the scatter points.
It cannot be the line of best fit because it is not closest to most of the points.
It cannot be the line of best fit because it does not show positive association.

Answers

Answer:

A)

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

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