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
torisob [31]
3 years ago
6

Based on a Comcast​ survey, there is a 0.8 probability that a randomly selected adult will watch​ prime-time TV​ live, instead o

f​ online, on​ DVR, etc. Assume that seven adults are randomly selected. Find the probability that fewer than three of the selected adults watch​ prime-time live.
Mathematics
1 answer:
klio [65]3 years ago
6 0

Answer: Our required probability is 0.004672.

Step-by-step explanation:

Since we have given that

Number of adults = 7

Probability of getting adult will watch prime time TV live = 0.8

We need to find the probability that fewer than 3 of the selected adults watch prime time live.

We will use "Binomial Distribution":

here, n = 7

p = 0.8

So, P(X<3)=P(X=0)+P(X=1)+P(X=2)

So, it becomes,

P(X=0)=(1-0.8)^7=0.2^7=0.0000128

P(X=1)=^7C_1(0.8)(0.2)^6=0.0003584\\\\P(X=2)=^7C_2(0.8)^2(0.2)^5=0.0043

So, probability that fewer than 3 of the selected adult watch prime time live is given by

0.0000128+0.0003584+0.0043=0.004672

Hence, our required probability is 0.004672.

You might be interested in
You inherit $5000 from your long lost Uncle Harold. The bad news is that the money must sit in a bank account for the next ten y
erastovalidia [21]

Answer:

5360

Step-by-step explanation:

5000*1.072=5360

6 0
1 year ago
The area of the pool is 150feet the pool is 5ft deep what is the volume​
Vlad [161]

Answer:

750 cubic (^3) feet

Step-by-step explanation:

6 0
3 years ago
Please help me
madreJ [45]
143.44 degrees
Hope this helps (:
7 0
2 years ago
Help? with complete solution​ please help me please
serious [3.7K]

9514 1404 393

Answer:

  1. 13 ft
  2. (a) 1 second; (b) t = 0, t = 1/2

Step-by-step explanation:

<h3>1. </h3>

Let w represent the length of the wire. Then the height of attachment is (w-1). The Pythagorean theorem tells us a relevant relation is ...

  5² +(w -1)² = w²

  w² -2w +26 = w² . . . . . . . eliminate parentheses, collect terms

  26 = 2w . . . . . . . . . . . . add 2w

  13 = w . . . . . . . . . . . . divide by 2

The length of the wire is 13 feet.

__

<h3>2. </h3>

(a) When h = 0, the equation is ...

  0 = -16t^2 +8t +8

Dividing by -8 puts this into standard form:

  2t^2 -t -1 = 0

Factoring, we get ...

  (2t +1)(t -1) = 0

The positive value of t that makes a factor zero is t = 1.

It will take 1 second for the gymnast to reach the ground.

__

(b) When h = 8, the equation is ...

  8 = -16t^2 +8t +8

Subtract 8 and divide by 8 to get ...

  0 = -2t^2 +t

  0 = t(1 -2t) . . . . factor out t

Values of t that make the factors zero are ...

  t = 0

  t = 1/2

The gymnast will be 8 feet above the ground at the start of the dismount, and 1/2 second later.

8 0
2 years ago
What would the equation be ?
Vikentia [17]

Answer:

y = 4/5x-18/5

Step-by-step explanation:

First we find the slope from the given points (-3,-6) (2,-2)

m = (y2-y1)/(x2-x1)

m = (-2 - -6)/(2 - -3)

   (-2+6)/( 2+3)

  4/5

The slope intercept form of an equation is

y = mx +b  where m is the slope and b is the y intercept

y = 4/5 x +b

Substitute a point into the equation to find b

-6= 4/5(-3) +b

-6= -12/5 +b

Add 12/5 to each side

-6 +12/5 = -12/5 +12/5 +b

Get a common denominator

-30/5 + 12/5 = b

-18/5 =b

The equation is

y = 4/5x-18/5

4 0
3 years ago
Other questions:
  • Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below
    10·1 answer
  • What is 63(2x+8)(x+7)
    6·2 answers
  • gavin is making cranberry lemonade. he wants to make a total of 6 cups. he needs to use 3 times as much lemonade as cranberry ju
    14·1 answer
  • A store employs 8 women and 13 men.
    5·1 answer
  • Please help! (i'll give the best answer brainliest)
    5·2 answers
  • I need help please ASAP
    10·1 answer
  • Find the radius of a circle with a circumference of 35 pie yards
    13·1 answer
  • There are 450 students at Central Middle School. In a survey, 90 of the student chose math as their favorite subject. What perce
    15·2 answers
  • A chi-squared curve is symmetric about 0
    9·1 answer
  • Find the slope of the line <br><br><br><br> Help me please
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!