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
vlabodo [156]
3 years ago
8

assume that when adults with smartphones are randomly selected, 44% use them in meetings or classes. If 10 adult smartphones use

rs are randomly selected find the probability that fewer than 3 of them
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
7 0

Solution: The given random experiment follows Binomial distribution with n=10,p=0.44

Let X be the number of adults who use their smartphones in meetings or classes.

Therefore, we have to find:

P(X

We know the binomial model is:

P(X=x)=\binom{n}{x} p^{x} (1-p)^{n-x}

\therefore P(X

                       =\binom{10}{0}0.44^{0}(1-0.44)^{12-0}+\binom{10}{1}0.44^{1}(1-0.44)^{10-1}+\binom{10}{2}0.44^{2}(1-0.44)^{10-2}

                       =1 \times 1 \times 0.0030 + 10 \times 0.44 \times 0.0054 + 45 \times 0.1936 \times 0.009672

                       =0.0030+0.0238+0.0843

                       =0.1111

Therefore, the probability that fewer than 3 of them is 0.1111

You might be interested in
Twenty two more than four times a number is less than 82
elena55 [62]
22+4*n-82 hope this is what u are looking for
7 0
3 years ago
Unit rates... please help
harina [27]
When rates are expressed as a quantity of 1 such as 2 feet per second or 5 miles per hour, that is the definition of unit rates.





(Hope this Helps:)
3 0
3 years ago
Can 45/9 be simplified?
sergiy2304 [10]

Answer:

yes to 5

Step-by-step explanation:

divide 45 by 9 and u get 5

3 0
2 years ago
Read 2 more answers
Find the equation of the line <br>Use exact numbers<br>y= x+​
guapka [62]

Answer:

I can't you didn't give the names of points on the line

Step-by-step explanation:

7 0
3 years ago
What is the ratio of the width of the yard to the area of the yard in 10 feet long by 7 feet wide
dezoksy [38]

Area = (length) x (width)

Area = (10-ft) x (7-ft) = 70 ft²

(Width) / (Area) = (7-ft) / (70 ft²)  =  1 / 10-ft .
4 0
3 years ago
Other questions:
  • How to write in equation in slope intercept form from graph
    8·1 answer
  • I need to solve for x, anyone out there know how to do it?
    13·1 answer
  • Find the slope and the equation of the line tangent to f (x )equals StartFraction 2 x minus 1 Over x plus 7 EndFraction at x​ =
    8·1 answer
  • Select the correct answer.
    8·2 answers
  • you created a new playast, and 100 of your friendslistened to it and shared if theyliked the new or not, Nadhil said the ratio o
    12·1 answer
  • Here are the answer choices
    14·1 answer
  • What is T = 3U/E solve for U
    6·1 answer
  • Two lines intersecting at a right angle form
    13·2 answers
  • 1. What are the solutions to the quadratic equation
    11·2 answers
  • Be Precise What is the difference between a terminating decimal and a repeating <br> decimal?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!