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
Virty [35]
3 years ago
12

Consider the probability that fewer than 11 out of 149 houses will lose power once a year. Assume the probability that a given h

ouse will lose power once a year is 11%.
Approximate the probability using the normal distribution. Round your answer to four decimal places.
Mathematics
1 answer:
bogdanovich [222]3 years ago
3 0

Answer:

.0615

Step-by-step explanation:

p=.11

n=149

np=16.39 (which is the mean)

x<11 so 10.5...-999

σ= \sqrt{16.39(1-.11)} =3.81930622

normalcdf(-999,10.5,16.39,3.81930622)

= .0615167786

You might be interested in
Martin wants to buy 4 plastic figures that cost $17 each. How much money does he need to save to purchase the figure?
Nat2105 [25]
1 figure = $17 so you multiply 4 and 17 to get 68 
Martin will need to save $68
3 0
3 years ago
Read 2 more answers
mark ordere wome balloons for a party that she is having.The balloons cost $4.50 each and there is a service fee of $12.The tota
ohaa [14]
A general equation to use for this situation is y = mx + b.

For this question, we can assume that y is total cost, m is cost per balloon, x is the amount of balloons, and b as the service fee; so we can set the equation up:

y = (4.50)x + 12

And we can further plug in the total cost to find the number of balloons purchased for the party:

79.50 = (4.50)x + 12

Now we can solve for x (number of balloons):

67.50 = (4.50)x

x = 15

The total number of balloons purchased for the party is 15.
5 0
3 years ago
the length of a rectangle is 5 times as long as its breadth and its area is 1620 m² find area of square whose perimeter is equal
Rus_ich [418]

Answer:

Area of the square is 2916 m^{2}.

Step-by-step explanation:

Let the breadth of the rectangle be represented by w. So that;

length of rectangle = 5w

Area of rectangle = length x breadth

                             = 5w x w

1620 = 5w^{2}

divide through by 5 to have,

w^{2} = 324

w = \sqrt{324}

   = 18

Thus, the breadth of the rectangle is 18 m.

length = 5 w = 5 x 18

           = 90 m

The length of the rectangle is 90 m.

Perimeter of the rectangle = 2(l + w)

                                  = 2( 90 + 18)

                                  = 216 m

Perimeter of a square = 4l

where l is the length of its side.

Given that the perimeters of the rectangle and square are equal, then;

4l = 216

l = \frac{216}{4}

 = 54

length of the side of square is 54 m.

Therefore,

Area of square = l^{2}

                         = 54^{2}

                        = 2916

Area of the square whose perimeter is equal to that of the rectangle is 2916 m^{2}.

6 0
3 years ago
Sole for the indicated variable.<br><br> ax+r=7, for x
nasty-shy [4]

ax+r=7

Move ax to the other side. +positive ax changes to -negative ax

ax-ax+r=7-ax

r=7-ax

Answer: r=7-ax or r=-ax+7 ( same thing) but rearranged

8 0
3 years ago
Haley and Sabrina are both training for a race. Haley runs 4.2 miles each day. Sabrina has been running 2/3 as many miles each d
Scorpion4ik [409]

Answer:

Sabrina will train 21 miles next week for the race.

Step-by-step explanation:

2/3 of 4.2=2.8

%25 more of 2.8=3.5

3.5*6=21 miles

5 0
3 years ago
Read 2 more answers
Other questions:
  • I need help finding the domain and range for the graph
    14·1 answer
  • Solve for X:
    10·1 answer
  • Indicate in standard form the equation of the line passing through the given points. R(3, 3), S(-6, -6)
    14·1 answer
  • I NEED THIS DONE ASAP!!!! WILL MARK BRAINLIEST
    8·2 answers
  • 11. Find the coordinates of A' and B'if A (3,5) and B (-7, 3) undergo
    12·1 answer
  • There are 6 people in edema family.Beach person drinks2\5 of a gallon of milk each week .How many gallons of milk does Den's fam
    12·1 answer
  • Jack is using a ladder to hang lights up in his house.he places the ladder 5 feet from the base of his house and leans it so it
    13·1 answer
  • Two angles of a triangle have the same measure and the third one is 24 degrees greater than the
    9·1 answer
  • PLEASE HELP! WILL MARK BRAINLIEST!
    12·1 answer
  • The value, V, of a certain investment doubles in every month, m. Which function can be used to find the value of the investment
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!