1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GarryVolchara [31]
3 years ago
13

Taylor Swift wants to know the proportion of her fans who listened to her new single ME! within the first hour of it being relea

sed. In order to estimate this, she takes a sample of 150 of her fans and asks them if they listened to the song in this time period. Of the 150 fans, 135 of them (90%) responded that they did listen to the song during this time period. What is the parameter and what is its value
Mathematics
1 answer:
lara31 [8.8K]3 years ago
8 0

Answer:

The parameter is the population proportion of fans who  listened to her new single and has an estimated value of 90%.

Step-by-step explanation:

The parameter is a value that corresponds to a population, while an a value that corresponds to a sample is know as statistic.

She takes a sample to estimate, with a point estimate and probably with a confidence interval around this point estimate, the true proportion of fans who listened to her new single.

This is the paramater: the population proportion of fans who listened to her new single.

Its value comes from an estimation based on the sample proportion (point estimate).

The sample proportion is 90%, so we can estimate, as there is no bias, that the population proportion is also 90%.

You might be interested in
The rectangle below has an area of x^2-x-72x 2 ?x?72 square meters and a length of x+8x+8 meters. What expression represents the
Varvara68 [4.7K]

Answer:

Area of the rectangle is given by:

A = l \times w

where

A is the area of the rectangle

l is the length of the rectangle

w is the width of the rectangle respectively.

As per the given statement:

Area of the rectangle(A) =  x^2-x-72 square meters

length of the rectangle(l) = x+8

Substitute these in the given formula we have;

x^2-x-72 = (x+8) \times w

x^2-9x+8x-72 = (x+8) \times w

x(x-9)+8(x-9)= (x+8) \times w

or

(x+8)(x-9)= (x+8) \times w

Divide both sides by x+8 we have;

w = (x-9) meters.

Therefore, the expression represents the width of the rectangle is x-9 meters


4 0
3 years ago
Point P is the incenter of triangle ABC, PZ = 7 units, and PA = 12 units.
cestrela7 [59]

The complete question is

"Point P is the incenter of triangle ABC, PZ = 7 units, and PA = 12 units.

The radius of the incircle centered at point P is ? units."

The radius of the incircle centered at point P is 7 units.

We are given that point P is the incenter of the triangle, and is the center point of the incircle of the triangle.

<h3>What is incircle?</h3>

The incircle is defined as the largest circle that can be made in a triangle and is tangent to each side of the triangle.

Here, The radius of the circle is going to be a perpendicular line from point P to any side of the triangle.

In the triangle ,

PZ = PY = PX,

Each measure of value is equal to the radius of the circle.

Therefore, we already know that PZ = 7 units making the radius, r = 7 units.

Learn more about  incircle;

brainly.com/question/24280138

#SPJ1

4 0
2 years ago
1. m∠QPR =<br><br> 2. m∠QTP =<br><br> 3. RP =<br> Show all the work
alex41 [277]

Answer:

1. 30°

2.90°

3. 12 units

Step-by-step explanation:

I can't believe there's nothing confirming that this is a parallelogram/a rhombus?! Assuming is awful, and I wish you could say you can't know for sure lol but for the sake of this answer, let's just call it a rhombus. (There was probably some context elsewhere that you didn't put over here, hopefully.)

1.

The reason I say this is: in a rhombus, the diagonals bisect the angles. This means that the diagonals split the angles they meet into two equal parts. That way, it would make sense. m∠QPR=m∠SPR=30°.

2.

If it is a rhombus, the diagonals are perpendicular to each other, so m∠QTP should be 90°.

3.

Diagnonals in a rhombus (and in any parallelogram) bisect each other, so PT=TR=6, and RP=PT+TR=12 units.

Sorry if this is all dreadfully wrong, and I hope I helped you!

7 0
3 years ago
105 people must be split into 3 equal groups. How many people in each group?​
Allisa [31]

Answer:

35 people in each

Step-by-step explanation:

105÷3=35

6 0
3 years ago
If a quadratic equation with real coefficients has a discriminant of 3 then the two roots must be
lukranit [14]

In a quadratic equation

q(x) = ax^2 + bx + c 

The discriminant is = b^2 - 4ac

We have that discriminant = 3

If b^2 - 4ac > 0, then the roots are real.

If b^2 - 4ac < 0 then the roots are imaginary

<span>In this problem b^2 - 4ac > 0   3 > 0 </span>

then the two roots must be real

6 0
3 years ago
Other questions:
  • V=704.5X/M^2 what is the solution for M^2
    8·1 answer
  • Solve<br> (x + 1)(x – 5) = 0
    14·2 answers
  • A postulate can also be called a(n)
    5·1 answer
  • A softball player got a hit in 20 of her last 50 times at bat. What is the experimental probability
    11·1 answer
  • What is the value of x if abc is equilateral
    6·1 answer
  • PLEASE ANSWER ASAP!!Find a rational function that might have the given graph. (More than one answer might be possible.)
    5·1 answer
  • Graph the solution of this inequality: 4/9 x- 10 &gt; x/3-12
    6·1 answer
  • Find the value of x.<br> Please help
    10·2 answers
  • Can someone pleaseeee help and if you’re correct I’ll give u brainlist! Yes or no?
    6·1 answer
  • Last year, Ishiro Novato drove 21,986 miles and had these expenses: gas $1,187.25; maintenance and miscellaneous $118.80; parkin
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!