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
MrRa [10]
2 years ago
11

Assume that the random variable X is normally distributed, with mean ? = 50 and standard deviation ? = 7. Compute the following

probabilities. Be sure to draw a normal curve with the area corresponding to the probability shaded.
P(56 < X < 68)

B- find the value of za.

z 0.02

C-assume that the random variable X is normally distributed, with mean ? = 50 and standard deviation ? = 7. Find each indicated percentile for X.

The 90th percentile

D-the graph of a normal curve is given. Use the graph to identify the values of ? and ?.

Mathematics
1 answer:
sineoko [7]2 years ago
4 0

Answer:

Step-by-step explanation:

Given that  the random variable X is normally distributed, with

mean  = 50 and standard deviation  = 7.

Then we have z= \frac{x-50}{7} is N(0,1)

Using this and normal table we find that

a) P(56

b) When z=0.02

we get

x=50+0.02(7)=50.14

c) 90th percentile z value =1.645

90th percentile of X =50+7(1.645)\\= 50+11.515\\=61.515

You might be interested in
A) 79.2<br> C) 11.9<br> B) 8.9<br> D) 11.6
vova2212 [387]

Answer:

789

Step-by-step explanation:

8 0
2 years ago
Masha is making a scale diagram of the front face of an aquarium. The face is shaped like a rectangle. She uses a scale of 1 cen
dangina [55]
14 feet because 5+5+2+2 equals 14
4 0
2 years ago
Bob has 60 coins consisting of quarters and dimes. The coins combined value is $13.35. How many quarters and how many dimes does
ddd [48]
60x0.25=15
60x0.10=6
51x0.25=12.75
13.35-12.75
D-6
Q-51
4 0
3 years ago
Solve the given equation for x.<br> 6 + x = 0
Andru [333]

Answer:

x=-6

Step-by-step explanation:

hope it helps

6 0
3 years ago
Read 2 more answers
What is the factorization of 3x2 – 8x + 5?
Charra [1.4K]
3x2-8x+5
=6-8x+5
=6-3x-5x+5
=3(2-x)-5(x-1)
3 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me answer these e questions pleasesssss
    8·1 answer
  • The area of square pond is 5625meter square and 2 meter width path is made around the pond
    11·2 answers
  • What is 4/7 devided by 6/7
    5·1 answer
  • At a certain company, the annual winter party is always held on the second of Friday of December. What is the latest possible da
    6·1 answer
  • a customers total bill is $50.50. The company charges a monthly fee of $28 plus 5 cents for each call. Use n to represent the nu
    11·1 answer
  • Helpp i need need!! i have a math exam coming up and im really bad so helpp
    8·2 answers
  • What is the midpoint of this segment??
    13·2 answers
  • 2y/5-y/4=-3 what is the common denominator
    7·1 answer
  • HELPPPPPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
    9·2 answers
  • Solve the System and write the solution as an ordered pair. <br><br> 3x+3y=6 <br> 5x-6y=15
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!