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
Mamont248 [21]
4 years ago
12

The length of a phone conversation is normally distributed with a mean of 4 minutes and a standard deviation of 0.6 minutes. Wha

t is the probability that a conversation lasts longer than 5 minutes
Mathematics
2 answers:
Arlecino [84]4 years ago
8 0
The z-score for 5 minutes is found from:
z=\frac{X-\mu}{\sigma}

z=\frac{5-4}{0.6}=1.667
Reference to a normal distribution table shows that the cumulative probability for a z-score of 1.667 is around 0.9522.
Therefore the probability that a conversation lasts for longer than 5 minutes is:
1 - 0.9522 = 0.048 to 3 d.p.
Artemon [7]4 years ago
7 0
The answer is A 0.54746
You might be interested in
What is the graph of the equation y = - 4*+<br> X 2?
3241004551 [841]

if you use the desmos graphing calculator - since you didn't provide answer choices - it should be able to help you.

3 0
3 years ago
Write the slope-intercept form of the equation of the line
Monica [59]

Answer:

y =-5x-17

Step-by-step explanation:

Slode-intercept is

y = mx + c

The first step is to find the slope, that is the m

To do that, use this formula

Y2 - y1

------------

X2- x1

And u will get - 5

Now since u got m, u also actually have y and x, those are the coordinates they gave u. U can choose either one,(-3, - 2) or (-4, 3), cuz they would give u the same answrs

So let's say I chose (-4, 3)

So x = - 4, y = 3

y=mx +c

3= - 5(-4) +c

C = - 17

Therefore your end product will be

y = - 5x - 17

8 0
3 years ago
Hellllllllllllllllllllllllllllllllllllllllllllppppppppppppppp
dolphi86 [110]
A circle, of radius r = radius of the sphere 

you can think of it in terms of projection the plan projection of the sphere is a circle. 
4 0
4 years ago
Michael thought he could read 23 pages of his book in class. He was only able to read 20. what is his percent error
Cerrena [4.2K]
Percent error is calculated using

((Actual - predicted) / actual) * 100

In this case, the actual value of the number of pages he read is 20. The expected value was 23. So simply plug in:

((20 - 23) / 20) * 100 = -15%

Please don’t forget to like and mark brainliest
8 0
2 years ago
How do you write 0.04×10 to the 5th power in standard form?
Y_Kistochka [10]
0.04x10^5
move decimal 5 TIMES TO THE RIGHT.
0.04000
   12345
4000
I hope this helps;)
4 0
3 years ago
Other questions:
  • Given that the two triangles are similar, solve for x if AU = 20x + 108, UB = 273, BC = 703, UV = 444, AV = 372 and AC = 589.
    14·1 answer
  • A boy throws a rock off a cliff. The function shown below models the flight of the rock, where x equals the distance the rock is
    12·1 answer
  • Consider the accompanying data on breaking load (kg/25mm width) for various fabrics in both an unabraded condition and an abrade
    8·1 answer
  • 2,3,4,5,6,7,8,9, 11, 13, 17, 19<br> Min: Q1 and Q3<br> Med: Max:
    11·1 answer
  • I need help ASAP this is due today
    7·1 answer
  • (-7. + 3 + x) - (=6 - 7.3 + 2.)
    11·1 answer
  • Complete the remainder of the table for the given function rule: y = 4 - 3 -4 0 4 8 12 0 0 y7 4 [?]​
    11·1 answer
  • Q. What is the second step in solving the following equation?<br> -3x + 5 = 20
    11·1 answer
  • 43. If L is the midpoint of KN an MP, which methods can be used to prove the triangles are congruent
    15·1 answer
  • You have been asked to analyze the popcorn recipes of three different local theatres in order to figure out which theatre has th
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!