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
Paul [167]
3 years ago
15

The campus bookstore knows from the past several semesters that a certain elementary statistics book has a demand that is approx

imated by a normal distribution with a mean of 250 and a standard deviation of 40. They buy these books for $105 each and sell them to unsuspecting undergraduates at $222 each. All demand for this book is realized by the middle of the semester, at which point the bookstore bundles them up and sells them to a vendor in another country for $40 each. What is the marginal profit for a single elementary statistics book
Mathematics
1 answer:
Likurg_2 [28]3 years ago
5 0

Answer:

$117

Step-by-step explanation:

Given that:

They buy these books for $105 each and sell them to unsuspecting undergraduates at $222 each

Marginal Profit = Marginal Revenue – Marginal Cost.

Marginal Profit = $222 - $105

Marginal Profit = $117

the marginal profit for a single elementary statistics book $117

For the remaining unsold books in the middle of the semester he bundles them up and sells to vendor in another country for $40 each for which he suffers a marginal loss of $105 - $40 = $65 each

You might be interested in
Can someone please give this answer and plz give me the right answers
Alenkinab [10]

girl come.................

8 0
3 years ago
A family is driving to their destination They drove 200 miles in 5 hours if they drove at the same rate for the whole trip home
grandymaker [24]

Answer:

266.66

Step-by-step explanation:

4 0
3 years ago
The lifetime of a certain brand of battery is known to have a standard deviation of 9 hours. Suppose that a random sample of 150
Kobotan [32]

Answer:

The 90% confidence interval for the true mean lifetime of all batteries of this brand is between 39.3 hours and 41.7 hours. The lower limit is 39.3 hours while the upper limit is 41.7 hours.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.05 = 0.95, so Z = 1.645.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645\frac{9}{\sqrt{150}} = 1.2

The lower end of the interval is the sample mean subtracted by M. So it is 40.5 - 1.2 = 39.3 hours

The upper end of the interval is the sample mean added to M. So it is 40.5 + 1.2 = 41.7 hours

The 90% confidence interval for the true mean lifetime of all batteries of this brand is between 39.3 hours and 41.7 hours. The lower limit is 39.3 hours while the upper limit is 41.7 hours.

7 0
3 years ago
In two supplementary angles,the measure of one angle is 6 more than twice the measure of the other. the measures of these two an
Natasha2012 [34]
6 + 2y = x
x + y = 180°

6 + 2y + y = 180°
3y = 174
y = 58°

x = 180° - 58°
x = 122°

i am a mathematics teacher. if anything to ask please pm me
3 0
3 years ago
Who can help me<br> Quien me puede ayudar
Svet_ta [14]

Answer:It's A

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Consider triangle ABC. The legs have a length of 5 units each. What is the length of the hypotenuse of the triangle?
    7·2 answers
  • the RATIO of floor seats to balcony seats in a theaters is 20:1. does this theater have more floor seats or more balcony seats?
    7·1 answer
  • Which are removable discontinuities?
    8·1 answer
  • A rectangular playground is surrounded by a chain link fence that costs $2 per linear foot on three sides and a fancier wooden f
    14·1 answer
  • How can i make 6/36 into a mixed number
    8·1 answer
  • Nancy had $2,848.52 in a savings account with simple interest. She had opened the account with $2,006 exactly 3 years earlier. W
    9·1 answer
  • Find the total balance of each investment account earning simple annual interest.
    5·2 answers
  • Can anyone help me and explain as well
    5·2 answers
  • A store bought a kitchen play set for $34.93 and sold it for $89.25. What was the markup percentage? Round your answer to the ne
    5·2 answers
  • Hi, can someone help with this problem ASAP?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!