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
maksim [4K]
3 years ago
9

A random sample of 200 books purchased at a local bookstore showed that 72 of the books were murder mysteries. Let 푝be the true

proportion of books sold by this store that is murder mystery. Construct a confidence interval with a 95% degree of confidence
Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer:

(0.2935, 0.4265)

Step-by-step explanation:

Given that a random sample of 200 books purchased at a local bookstore showed that 72 of the books were murder mysteries.

Sample proportion p follows the following characteristics

p 0.36

q 0.64

pq/n 0.001152

Std dev 0.033941125

For 95% confidence level we have critical value as

Z critical = 1.96

Hence margin of error = 1.96*std dev

Confidence interval = (sample proportion - margin of error, sample proportion + margin of error)

=(0.2935, 0.4265)

You might be interested in
1-1: HOMEWORK
Paraphin [41]
I think its 0.78/1...???
3 0
2 years ago
Read 2 more answers
Convert 23 days to weeks and days?
dezoksy [38]

Answer:

3 weeks and 2 days

Step-by-step explanation:

6 0
2 years ago
What is the distance beween the points (3,6) and (4,2)
Reil [10]
The answer is sqrt17 or 4.123

3 0
2 years ago
Pls help 50 points<br> best + correct answer gets brainliest crown
fomenos

<em>*Remember that A = angle and S = side.</em>

So remember that <u>similar figures have congruent angles and proportional sides.</u> Looking at triangles ABC and DEF, they both share 85° and 30° angles. <u>With this, the two triangles are similar by AA, or the first option.</u>

8 0
3 years ago
Read 2 more answers
The egyptian has a base with a length of 230 m,width m, and a height of 147 m. what is the surface area of the pyramid
Naily [24]
 <span>A unit </span>cube<span> is simply a </span>cube<span> measuring one inch, one centimeter, one </span>foot<span>, or whatever unit of measurement you are using, on all sides. ... </span>If<span> you look carefully, you will see that the </span>volume<span> of the</span>rectangular prism<span> is a function of multiplying the </span>length<span> the </span>width<span> the </span>height<span>. ... First find the </span>area<span> of the</span>base<span>. does that help</span>
6 0
3 years ago
Other questions:
  • Rotate the triangle on the graph 90° counterclockwise about the origin. Determine the orientation of the triangle after the rota
    12·1 answer
  • You budget 30% of your annual after-tax income for housing Your after-tax income
    11·1 answer
  • What is the equation of the graph below?​
    5·2 answers
  • The sum of the numbers and four is 10 less than 12
    7·1 answer
  • As Jupiter revolves around the sun, it travels at a speed of approximately 8 miles per second. Convert this speed to miles per m
    15·1 answer
  • Lexie bought a new car for $32,000. It
    9·1 answer
  • I will pick the brainiest answer!!! Thanks! :)
    7·1 answer
  • Inequalities <br><br> 25 + 6x &lt; 300<br><br> right answers get brainiest
    9·1 answer
  • Helpl please urgent!! plzzzzzzzzzzzz
    5·1 answer
  • What is the quotient of 62 divided by 5?<br> A. 10 r. 5<br> B. 12 r. 2<br> C. 13<br> D. 12 r. 4
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!