answer.
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
hram777 [196]
1 year ago
6

The Boeing 757-200 ER airliner carries 200 passengers and has doors with a height of 72 inches. Heights of men are normally dist

ributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. If half of the 200 passengers are men, find the probability that the mean height of the 100 men is less than 72 inches.
a)0.0001

b)0.8577

c)0.9999

d)0.1432
Mathematics
1 answer:
Maksim231197 [3]1 year ago
7 0

Answer:b)0.8577

Step-by-step explanation:

Since the heights of men are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - u)/s

Where

x = heights of men

u = mean height

s = standard deviation

From the information given,

u = 69 inches

s = 2.8 inches

We want to find the probability that the mean height of the 100 men is less than 72 inches.. It is expressed as

P(x < 72)

For x = 72

z = (72 - 69)/2.8 = 1.07

Looking at the normal distribution table, the probability corresponding to the z score is 0.8577

P(x < 72) = 0.8577

You might be interested in
In the figure shown, FG is tangent to circle D.
romanna [79]

Answer:

Option B

Step-by-step explanation:

From the figure attached,

Circle D is drawn with the radius = DG or DE

A tangent FG has been drawn at a point G on the circle from an external point F.

By theorem,

Radius of a circle is always perpendicular to the tangent, drawn to the circle from an external point.

Therefore, DG ⊥ FG.

Option B will be the correct option.

8 0
1 year ago
If 25 dimes were moved from Box A to Box B, there would be an equal amount of dimes in both boxes. If 100 dimes were moved from
nexus9112 [7]
Ok.look.the question is like that
7:2 so first of all divide 7 by 2 like that 7/2 so you get 3.5 ok than add 3.5 with 2 so the answer is 5.5
5 0
2 years ago
Solve the system by substitution<br><br><br> -x - y - z = -8<br> -4x + 4y + 5z = 7<br> 2x + 2z = 4
gulaghasi [49]

Answer: 14

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
At Monroe High School, 62% of all students participate in after school sports and 11% participate in both after school sports an
dimaraw [331]
Hey there!

Before you start solving anything, you need to identify which situation you want to call event A and which you want to call event B. I usually just do it in the order of the events as they're given to me in the question, so:

A = S<span>tudent participates in student council
B = S</span><span>tudent participates in after school sports

Any problems that contain the word "given" in the question portion will want you to refer to </span>P(A | B)<span> = P(</span>A ∩ B)/P(B). P(A | B) literally means "probability of event A, given that event B has occurred." P(A ∩ B) is the probability of event A and B happening, and P(B) is just the probability of event B happening. We've been given all of that, so:

P(A | B) = P(A ∩ B)/P(B)
P(A | B) = 11% / 62%
P(A | B) = 0.11 / 0.62
P(A | B) = 0.18

There will be about an 18% chance that <span>a student participates in student council, given that the student participates in after school sports. 

Hope this helped you out! :-)</span>
4 0
1 year ago
Read 2 more answers
You’re working in the sedan section of dean’s car dealership. A customer makes a down payment of 15% on a new car that costs $13
Shkiper50 [21]

Answer:

Convert  15 %  to a decimal.  

Then multiply 0.15  x 13450. That means the answer is $2,017.50

Please mark brainliest if this helped.

3 0
1 year ago
Other questions:
  • The triangles are similar. If DE = 24, EF = 42, and AB = 8, find BC.
    11·1 answer
  • Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Show the correct substitution of the values
    13·1 answer
  • A line contains (34,12) and (32,48) what is the slope of the line in simplified form? HELP ASAPl
    8·1 answer
  • Tommy has 5 jars of marbles. Each jar is 2/3 filled with marbles. How many jars of marbles does Tommy have
    5·1 answer
  • Solve x2 – 8x = 3 by completing the square. Which is the solution set of the equation?
    13·2 answers
  • Suppose that after 10 years of service, 40% of computers have problems with motherboards (MB), 30% have problems with hard drive
    8·1 answer
  • The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 -57, where t is the time
    6·1 answer
  • JUST ONE MORE I NEED HELP ON HW IM STRUGGLING 15pts
    12·2 answers
  • A car is traveling on Michigan Street towards Ward Street. The car planes to turn right into Ward Street. what is the angle meas
    11·1 answer
  • Solve the equation -10 (g - 6) = -65
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!