What is the answer plz ?

Answer:

Since there are 320 students, and Preston expects 0.5% of them to be from Australia, the expected count of students from Australia is 0.005 (320) =1.6

The expected count students from Australia is 1.6.

Step-by-step explanation:

The expected count of students from Australia in Preston's group is equal to 1.6.

A goodness-of-fit test can be defined as a statistical tool that is used to test if sample data fits into a set of observations or distribution from a given population.

This ultimately implies that, a goodness-of-fit test helps to determine whether on not sample data represents the data that are expected in an actual population.

Given the followin data:

Popuation = 320 students.

Expected percent (Preston's group) = 0.5% = 0.005.

Expect count = 0.005 × 320

Expect count = 1.6.

Read more on goodness-of-fit test here: https://brainly.com/question/16910222

Answer:

w = [tex]\frac{3}{2}[/tex]

Step-by-step explanation:

Given

[tex]\frac{x}{y}[/tex] = 6 and x = 36 , then

[tex]\frac{36}{y}[/tex] = 6 ( multiply both sides by y )

36 = 6y ( divide both sides by 6 (

6 = y

Then

[tex]\frac{y}{w}[/tex] = 4 , that is

[tex]\frac{6}{w}[/tex] = 4 ( multiply both sides by w )

6 = 4w ( divide both sides by 4 )

[tex]\frac{6}{4}[/tex]  = w , that is

w = [tex]\frac{3}{2}[/tex]

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Answer:

x = 4 + 3/2y

y = -8/3 + 2/3x

1. Finding X

2x-3y=8

2x=8+3y

x+4+3/2y

2. Finding Y

2x-3y=8

-3y=8-2x

y=-8/3+2/3x

Answer:

whole question?

Step-by-step explanation:

Answer:

Ten is the middle value in a set of numbers.

Step-by-step explanation:

Remember mean, median, and mode.

Mean: has an "a" so you can remember it's the average of the set of numbers

Mode: starts with "mo" and is the most frequent in a set of numbers

Median: has an "i" for being in the middle of the set

Hope this helps! Have a nice day :)

Answer:

The answer would be: B- X

Step-by-step explanation:

It would be X because you just count how many feeders and put it over the amount of birds.

Answer: there are 2 student art and 19 student study Biology

Step-by-step explanation:

Because 4 is already study neither subject.

Answer:

The "p if and only if q" statement is equivalent to "q if and only if p", then let's rewrite all the propositions in this way.

a) "If it is hot outside you buy an ice cream cone, and if you buy an ice cream cone it is hot outside."

We can define:

q = is hot outside

p = you buy an ice cream cone

Then we can rewrite this as:

"You buy an ice cream cone if and only if is hot outside"

b)  "For you to win the contest it is necessary and sufficient that you have the only winning ticket."

We can define:

p = you winning the contest

q = have the winning ticket

Then we can rewrite (changing some words) this as:

"You will win the contest if and only if you have the winning ticke"

c) "You get promoted only if you have connections, and you have connections only if you get promoted."

We can define:

p = you get promoted

q = you have connections

We can rewrite the proposition as:

"You can get promoted if and only if you have connections"

d) " If you watch television your mind will decay, and conversely."

We can define:

p = you watch television

q = your mind will decay

We can rewrite it as:

"You can watch television if and only if your mind decays"

e) " The trains run late on exactly those days when I take it."

We can define:

p = The train runs late

q = I take it.

We can rewrite the proposition as:

"The train runs late if and only if I take it"

Answer:

4

Step-by-step explanation:

minimum number of hoses needed = farthest length / length of a hose

convert the length of a hose to feet

1 yards = 3 feet

25 x 3 = 75 feet

230 / 75 = 3.1

4 hoses would be needed

Answer:

This is the equation that you have to write open this picture I send you the equation

This is the Answer for your question :3

I hope you are having a great day ❤️❤️❤️❤️

Answer:

The answer is D

Step-by-step explanation: Trust me! hope this helps:)

Answer:

Option D

Dilation with scale factor 2, multiply by 2.

(x, y) → (2x,2y)

Step-by-step explanation:

J(2,4) → J'(4,8)

K(1,1)  → K'(2,2)

L(4,0) → L'(8,0)

Dilate with a scale factor of 2

Each set of JKL points multiplied by 2 to form J'K'L'

J(2*2, 2*4)

K(2*1, 2*1)  

L(2*4, 2*0)

Answer:

false

Step-by-step explanation:

winter can lead into the months of January February and others.

Answer:

See below for answers and explanations to the first 5 problems

Step-by-step explanation:

Problem 1:

cos(x) = 2/3

sec(x) = ?

sec(x) = 1/cos(x)

sec(x) = 1/(2/3)

sec(x) = 3/2

Problem 2:

sinβ = -5/6

cscβ = ?

cscβ = 1/sinβ

cscβ = 1/(-5/6)

cscβ = -6/5

Problem 3:

secφ = 2

tanφ = √3

sinφ = ?

secφ = 1/cosφ

tanφ = sinφ/cosφ

tanφ = sinφ/cosφ

tanφ = sinφ(1/secφ)

√3 = sinφ(1/2)

2√3 = sinφ

Problem 4:

secθ = 8

tanθ = 3√7

cscθ = ?

secθ = 1/cosθ

tanθ = sinθ/cosθ

cscθ = 1/sinθ

tanθ = sinθ/cosθ

tanθ = sinθ(1/cosθ)

3√7 = sinθsecθ

3√7 = sinθ(8)

(3√7)/8 = sinθ

cscθ = 1/sinθ

cscθ = 1/((3√7)/8)

cscθ = 8/(3√7)

cscθ = (8√7)/21

Problem 5:

sinθ = 2/√5

cosθ = 1/√5

tanθ = ?

tanθ = sinθ/cosθ

tanθ = (2/√5)/(1/√5)

tanθ = (2/√5)(√5)

tanθ = 2

Answer:

B. $5039.58

Step-by-step explanation:

compound interest formula: amount = p(1 + \frac{r}{n})^{nt}

p= principal ($2,300)

r= interest rate as a decimal (4% = 0.04)

n= number of times the principal is compounded per year (annually = onceper year so 1 time per year)

t= time in years (20 years)

new equation: amount = 2300(1+\frac{0.04}{1} )^{1*20}

That equation equals $2,739.58 which you add to the principal.

$2,739.58 + $2,300 = $5039.58

hope this helps :)

Answer:

4.9

Step-by-step explanation:

Tenths is the number directly after the "." so the 8 in 4.87 is the tenth. Rounding is quite easy, since 7 is bigger than 5 you add 1 to the 8 thus rounding the 4.87 to 4.9

Answer:

4.90

Step-by-step explanation

in 4.87 the 7 hundredth is closer to 4.90 rather than 4.80

Step-by-step explanation:

Answers:

How many dogs weigh at least 100 pounds?

14 + 5+ 3 + 1 = 23 dogs.

How many dogs weigh exactly 70 pounds?

is unknown, so will be 60-79 .

How many dogs weigh at least 120 and less than 160 pounds?

8 dogs weigh 120 less than 160 pounds.

How much does the heaviest dog at the show weigh?

is unknown, but could be between - 160-179

What would you consider a typical weight for a dog at this dog show? Explain your reasoning.

A typical dog weighs can be 100 - 120.

Answer: 11 and 9 1/2!

Step-by-step explanation:

Because look at the chart the most are? You guessed it! 11 and 9 1/2 hope it helps!

Answer: 86 mph

Step-by-step explanation:

Given

Ms. Dos has driven 94.6 miles

Time is taken 1.1 hours

Average speed is given by the ratio of total distance and total time taken

[tex]\Rightarrow \text{Average speed v=}\dfrac{94.6}{1.1}\\\\\Rightarrow v=86\ mph[/tex]

Answer:

53.13degrees

Step-by-step explanation:

Using the SOH CAH TOA identity'

Sin theta = opposite/hypotenuse

Given

Hypotenuse AC= 10

Opposite BC = 8

Required

theta

Substitute

Sin theta = BC/AC

Sin theta = 8/10

sin theta= 0.8

theta = arcsin0,8

theta =  53.13

Hence the requred angle is 53.13degrees

Answer:

10 pounds

Step-by-step explanation:

the requested information so that

Answer:

if u any doubts pls refer the link

https://estudy-helpers.com/mathematics/question513373753

Answer:

0.3 hour or 18 minutes

Step-by-step explanation:

How long means, we are to calculate the time(t)

Hence,

Speed × time = Distance

For Neil , 11 × t

For Charlie = 9 × t

11t + 9t = 6

20t = 6

t = 6/20

t = 0.3 hour

Converting to minutes

1 hour = 60 minutes

0.3 hour = x

x = 0.3 × 60 minutes

x = 18 minutes

Therefore, it will take 0.3 hour or 18 minutes for these two to meet.