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
RUDIKE [14]
3 years ago
7

In a recent survey of 150 teenagers, 93 stated that they always wear their seat belt when they travel in a car. Assuming the dis

tribution is approximately normal, find the point estimate and standard error for the proportion of teenagers that always wear a seat belt when traveling in a car. Round your answers to two decimal places, as needed.
Mathematics
1 answer:
irinina [24]3 years ago
3 0

Answer:

Point estimate = 0.62

Step-by-step explanation:

Point estimate = x/n

Given

n is the sample size = 150

X = Those that wear their seat belt

X = 93

Point estimates = 93/150

Point estimates = 0.62

You might be interested in
Which of the following functions best represents the graph?
marshall27 [118]

Answer:

f(x)=x^3+x^2-4x-4

Step-by-step explanation:

From the graph, the x-intercepts are;

x=-2

x=-1

x=2

These are root of the polynomial function represented by the given graph.

By the remainder theorem;

f(-2)=0,f(-1)=0,f(2)=0

According to the factor theorem, if (x-a) is a factor of f(x), then f(a)=0

This implies that;

(x+2),(x+1),(x-2) are factors of the required function.

Hence; f(x)=(x+1)(x-2)(x+2)

We expand using difference of two squares to obtain;

f(x)=(x+1)(x^2-4)

We expand using the distributive property to get;

f(x)=x^3-4x+x^2-4

Rewrite in standard form to obtain;

f(x)=x^3+x^2-4x-4

6 0
3 years ago
Read 2 more answers
I need help with #11 plzzz
REY [17]

Answer:

he is correct he might have seen it's 3 times more than 18-29 which is 10% so he just multiplied 45 with 3

4 0
3 years ago
How do you write 220% as a fraction or mixed number in simplest form?
Kay [80]
220% is 2.20 in decimal form in fraction 2 1/5
7 0
3 years ago
Read 2 more answers
Please help i really really need help
pishuonlain [190]

Answer:

B

Step-by-step explanation:

The second one!!!

3 0
3 years ago
A green die and a red die are tossed. What is the probability that a "4" shows on the green die and a "5" shows on the red die?
Vera_Pavlovna [14]

Answer:

1 out of 6 for green die and 1 out of 6 for red die

Step-by-step explanation:

As we know there are six numbers on both of the dices

so if we toss a die there is a 1 out of 6 outcomes that a 4 comes out for the green die and 1 out of 6 outcomes again for the red die

5 0
3 years ago
Other questions:
  • Need to find the formula for:
    12·1 answer
  • How to solve an equation with x on both sides
    5·2 answers
  • If y varies inversely as x^2 and y = 3 when x = 18, what is y when x = 3?
    11·2 answers
  • What is 1x1? please help me lol
    10·2 answers
  • Write an equation in point slope form for the line that has a slope of 9/4 and contains the point (3, -4)
    10·1 answer
  • 8th grade math question need an answer asap
    6·2 answers
  • Can anyone help me out with this answer?
    13·1 answer
  • Complete the following statement.
    13·1 answer
  • Help pls 20 pts math
    8·2 answers
  • Write 64,120 in scientific notation
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!