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
julsineya [31]
3 years ago
5

Think about a population proportion that you may be interested in and propose a confidence interval problem for this parameter.

Mathematics
1 answer:
o-na [289]3 years ago
8 0

Answer: The confidence interval would be (0.2928,0.3672).

Step-by-step explanation:

Since we have given that

Total number of vehicles = 432

Number of SUVs sold = 142

So, it becomes,

\hat{p}=\dfrac{x}{n}=\dfrac{142}{432}=0.33

At 90% confidence interval,

z = 1.645

So, the confidence interval would be

\hat{p}\pm z\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.33\pm 1.645\sqrt{\dfrac{0.33\times 0.67}{432}}\\\\=0.33\pm 0.0372\\\\=(0.33-0.0372,0.33+0.0372)\\\\=(0.2928,0.3672)

Hence, the confidence interval would be (0.2928,0.3672).

You might be interested in
Trevor is analyzing a circle, y2 + x2 = 49, and a linear function g(x). Will they intersect?
melomori [17]
We have a circumference that is given by the following equation:

x^{2}+y^{2}=49

We can write this equation in its standard form as follows:

 x^{2}+y^{2}=7^{2} \\ where \ the \ radius \ r=7

On the other hand, the linear function is given as the following table:

x \ \ \ \ \ \ \ \ g(x) \\ -1 \ \ -9.2 \\ 0 \ \ \ \ \ -9 \\ 1 \ \ \ \ \ -8.8

To check if the circle and the line intersects, let's substitute the equation of the line into the equation of the circle to see if there is a real solution, so:

x^{2}+(0.2x-9)^{2}=49 \\ \\ \therefore x^{2}+0.04x^{2}-3.6x+81=49 \\ \\ \therefore 1.04x^{2}-36x+32=0 \\ \\ Solving \ for \ x: \\ x_{1}=33.70 \\ x_{2}=0.91 \\ \\ Solving \ for \ y: \\ y_{1}=0.2(33.70)-9=-2.26 \\ y_{2}=0.2(0.91)-9=-8.18

 Finally the intersects are:

 P_{1}(33.70, -2.26) \ and \ P_{2}(0.91, -8.18)
<span>
</span>
7 0
2 years ago
Read 2 more answers
Synthetic division of (×3-125)÷(×-5)​
vodka [1.7K]

Answer:

I believe that it might be 24.4

7 0
3 years ago
A child has the magnet numbers 1 through 50 on their fridge. What is the probability that the child will choose a number that is
Ludmilka [50]

Answer:

9/10

Step-by-step explanation: the magic mushroom said so

5 0
2 years ago
If Greg ate 5/7 of a cake and bob ate 3/9 how much is left
laiz [17]
2 + 6 = 8. 2 is left. 6 is left.
8 0
3 years ago
Plz help ill give you brainlist
Daniel [21]
Consider this option:
1. formula of perimeter is: P=2(a+b), where a & b - the sides of rectangle.
2. according to the condition 2(x+(x+4))<120; ⇒ x<28
answer: D. x<28
5 0
3 years ago
Other questions:
  • I ONLY GOT ONE SHOT!! PLEASE HELP, IT'S KIDA EASY IG, IM JUST DUMB.. WILL GIVE BRAINLIEST AND VOTE!! AT LEAST LOOK
    15·1 answer
  • Find the sum of the first 150 terms of the arithmetic series: 4, 5, 6, 7, 8, … 7,345 11,775 13,322 15,654
    5·1 answer
  • What is tenth sequence for N+6
    5·2 answers
  • Ritin has 21/5 litres of lemonade of which he distributed 13/4 litre lemonade . how much lemonade left with him
    9·2 answers
  • Three sixth plus one third?
    11·2 answers
  • Which interval for the graphed function has a local
    13·2 answers
  • What are the coordinates of point F?
    6·1 answer
  •  Which table below matches the scatter plot?
    10·1 answer
  • I need to know what 9+10=
    14·2 answers
  • Solve for x: 6 &lt; 4x + 8 &lt; 14
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!