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
kykrilka [37]
2 years ago
11

Suppose that x is normally distributed with mean 80 and standard deviation 25. What is the probability that x is greater than 77

. 5?
Mathematics
1 answer:
lana66690 [7]2 years ago
6 0

The probability that x is greater than 77. 5 is 0.039828

Given,

Mean, μ = 80

Standard deviation, σ = 25

We have to find z score corresponding to 77.5

z = (x-μ) / σ

   =\frac{77.5-80}{25} \\= 0.1

Now we have to find P value from Z table:

P(x<77.5) = 0.46017

P(x>77.5) = 1 - P(x<77.5) = 0.53983

P(77.5<x<80) = 0.5 - P(x<77.5) = 0.039828

The probability of x greater than 77.5 is 0.039828

Learn more about Probability from here: brainly.com/question/16177246

#SPJ4

You might be interested in
A pyramid has a square base that is 160m on each side. What is the perimeter of the base in kilometers?
Nikolay [14]
The perimeter is the sum of all sides' lengths

So the perimeter = 4*160 m =640 m = 0.64 km
4 0
3 years ago
Read 2 more answers
Five times a certain number plus 5 is 45​
ruslelena [56]

Answer:

8

Step-by-step explanation:

8x5=40 + 5 = 45

That's the answer

8 0
3 years ago
There are 72 squares in the model. 72 squares What is the result of 72 divided by 12? 6 8 9 12
bearhunter [10]

Answer:

6

Step-by-step explanation:

72 divided by 12 equals 6

8 0
3 years ago
Read 2 more answers
A 22 gram sample of substance that's used to surgical instruments has k-value of 0.138
stiks02 [169]
Yeah thats right y u pretty much asked a true or false question 
8 0
4 years ago
10
prohojiy [21]

Answer:

Step-by-step explanation:

The formulas to find the x and y coordinates of E are:

x=\frac{bx_1+ax_2}{a+b}  and  y=\frac{by_1+ay_2}{a+b}  where x1, x2, y1, and y2 are from the coordinates of A and B, and a = 1 (from the ratio) and b = 2 (from the ratio). Filling in to find x first:

x=\frac{2(2)+1(-4)}{1+2}=\frac{4-4}{3}=0  and now for y:

y=\frac{2(-3)+1(9)}{1+2}=\frac{-6+9}{3}=\frac{3}{3}=1

The coordinates of E are (0, 1).

8 0
3 years ago
Read 2 more answers
Other questions:
  • The ticket one is the one I need help on
    9·1 answer
  • Can someone help me with 20-22
    10·1 answer
  • Which ratio is greater
    13·1 answer
  • On a given planet, the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is 3 k
    6·1 answer
  • What is the approximate volume?
    11·2 answers
  • A quiz has 10 multiple choice questions each with 4 answers that are equally likely to be the correct one. Suppose that the quiz
    12·1 answer
  • 4h+2i+3j-2h-i. <br><br><br>?? I dont get it? please help​
    10·2 answers
  • Plz help I need help
    14·1 answer
  • 1
    7·1 answer
  • Use cross products to solve the proportion.​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!