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
marishachu [46]
3 years ago
10

A yearbook company was investigating whether there is a significant difference between two states in the percents of high school

students who order yearbooks. From a random sample of 150 students selected from one state, 70 had ordered a yearbook. From a random sample of 100 students selected from the other state, 65 had ordered a yearbook. Which of the following is the most appropriate method for analyzing the results?
Mathematics
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer: D. two-sample z-test for a difference in population proportions

Step-by-step explanation:

The options for the given questions were missing. The options are as follows:

A one-sample z-test for a sample proportion

B one-sample z-test for a population proportion

A

C two-sample z-test for a difference in sample proportions

D two-sample z-test for a difference in population proportions

Solution:

Sample proportions are used to estimate population proportions.

We are given the sample proportion of students from one state who ordered a yearbook = 70/150

We are also given the sample proportion of students from the other state who ordered a yearbook = 65/100

Since there are 2 samples and we want to investigate if there is a difference between 2 population of students,

Therefore, the most appropriate method for analyzing the results is

D. two-sample z-test for a difference in population proportions

You might be interested in
2x + 3y = -1<br> 5r 2y = 12?
Lina20 [59]
That’s correct i think:)
3 0
2 years ago
Read 2 more answers
(2x+7)(3x-5)<br> What is the answer of this question ?
gladu [14]
The answer is 6x^2+11x-35
8 0
3 years ago
Triangle DEF has vertices D(0,0), E(7,0), and F(3,7).
Leni [432]

Answer:

(3, 1.7)

Step-by-step explanation:

The point at which the vertices of a triangle meet is known as the orthocenter of the triangle. The orthocenter passes through the vertex of the triangle and is perpendicular to the opposite sides.

Two lines are perpendicular if the product of their slopes is -1.

The slope of the line joining D(0,0), F(3,7) is:

m_1=\frac{7-0}{3-0}=\frac{7}{3}

The slope of the line perpendicular to the line joining D and F is -3/7. The orthocenter is perpendicular to the line joining D and F and passes through vertex E(7, 0). The equation is hence:

y-y_1=m(x-x_1)\\\\y-0=-\frac{3}{7} (x-7)\\\\y=-\frac{3}{7}x+3 \ .\ .\ .\ (1)

The slope of the line joining E(7,0), and F(3,7). is:

m_1=\frac{7-0}{3-7}=-\frac{7}{4}

The slope of the line perpendicular to the line joining E and F is 4/7. The orthocenter is perpendicular to the line joining E and F and passes through vertex D(0, 0). The equation is hence:

y-y_1=m(x-x_1)\\\\y-0=\frac{4}{7} (x-0)\\\\y=\frac{4}{7} x\ .\ .\ .\ (2)

The point of intersection of equation 1 and equation 2 is the orthocenter. Solving equation 1 and 2 simultaneously gives:

x = 3, y = 1.7

4 0
2 years ago
in 1990 the population of the midwest was about 60 million during the 1990s the population of this area increased an average of
Naily [24]
Y=60million +.4x is the answer
3 0
2 years ago
How many x -intercepts does the parabola whose function is f(x)=3 x 2 +4x+4
artcher [175]

Answer:

They are none x- intercepts on the parabola. To find the x-intercept, substitute in 0 for y and solve for x.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Point J is located at (3,3) and point K is located at (7,-5) Find the midpoint of the line segment JK
    12·1 answer
  • A polygon has an area of 225 square meters. If the area is tripled, how does each side length change?
    15·1 answer
  • 5. Find the midpoint of AB given A(-7, 4) and B(3,-4).
    15·1 answer
  • An airplane flying at 24,600 feet is directly over a submarine that is 875 feet below sea level. what is the distance between a
    11·2 answers
  • .) Which expression is equivalent to 15c+20?<br> 15(c+20)<br> 15(c +4)<br> 5(3C+4<br> 5(3c+20)
    9·2 answers
  • Find x round your answer to the nearest tenth of a degree
    10·2 answers
  • Find the value of x. Write your answer in simplest form.<br> 30°<br> X<br> 14<br> X =
    13·1 answer
  • 7. Which of the following is equal to<br>AnB ?​
    12·1 answer
  • The calculate the mean,____ all the numbers in the data set and then ____
    14·2 answers
  • I am the 2nd digit number with two prime factors each to the second power. what number am i?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!