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
Ulleksa [173]
3 years ago
6

Harlee uses a device to convert her electronic textbook into braille. Unfortunately, the textbook did not include text descripti

ons of the diagrams, and 2/3 of the pages have diagrams. Let N be the number of pages Harlee reads to reach the first page with a diagram. Assume that the probability of each page having a diagram is independent. Find the mean and standard deviation of N. Round your answers to one decimal place.
Mathematics
1 answer:
Ainat [17]3 years ago
7 0

Answer:

Mean: 1.5

Standard Deviation: 0.9

Step-by-step explanation:

2/3 of the pages have diagrams, and N is the number of pages Harlee reads to reach a page with a diagram. In order to find the mean, divide 1/(2/3) to get 1.5 as your mean, and then divide sqrt(1-(2/3))/2/3 to get .8660, which rounds to .9.

You might be interested in
18. The sum of 'l6, /3, and 'Is is
lys-0071 [83]

Answer:

wn work

Step-by-step explanation:

3 0
3 years ago
Will mark brainliest<br> please help me asap on this word problem! explain.
Setler79 [48]

Answer:

The second one for both a and b.

Step-by-step explanation:

The first cereal box is:

8•3•11=264 inches cubed

the second cereal box is:

10•10•3=300 inches cubed

a. The box that holds more cereal would be the second one, since it has more volume.

b. The box that requires more material to make is the second one, since the it is bigger in volume, therefore, bigger in length and width.

3 0
3 years ago
Pls help...mhdusbdhsj​
Karo-lina-s [1.5K]

Answer:

270

Step-by-step explanation:

-6 multiply 5 gives you -30

-3 multiply -3 gives you -9

-30 multiply 9 gives you

-270

4 0
2 years ago
Find the cost price when,<br>(a) Selling price = Rs 725 and 15% gain​
Debora [2.8K]

Step-by-step explanation:

Selling Price (SP) = Rs. 725

profit rate (P%) = 15 %

Now

Cost Price (CP)

=  \frac{sp \:  \times 100}{100 + p\%}  \\  =  \frac{725 \times 100}{100 + 15}   \\  =  \frac{72500}{115}  \\  = rs \: 630.42

4 0
3 years ago
At the beginning of the day, stock XYZ opened at $3.15. At the end of the day, it closed at $2.87. What is the rate of change of
natta225 [31]

Answer:

-8.9%

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Other questions:
  • A manufacturer produces jeans in 9 sizes, 7 different colors, and 6 different stitching patterns. If a branch store manager orde
    7·1 answer
  • Simplify (7^2 -4^2) - [(24) /(-6)]
    5·1 answer
  • The price of your favorite jeans was $35 last month. This month the price was $42. What is the percent change from last month to
    11·1 answer
  • What will be the equation of a line that is
    12·1 answer
  • Please help
    7·1 answer
  • Can an equation have equal expressions
    9·1 answer
  • What is the sum of the two polynomials?
    5·1 answer
  • The number of people who have heard a rumor often grows exponentially. Consider a rumor that starts with 3 people and where the
    5·1 answer
  • I'm sorry that I'm asking this, I feel odd doing it, but I'm tired. So what is the value of |-8|
    8·1 answer
  • What is the radius of a circle that has a circumference of 1
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!