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
Lelechka [254]
2 years ago
7

Let x have a normal distribution with mean µ = 30 and standard deviation σ = 10. calculate p(x > 40), and round your answer t

o two decimal places.
Mathematics
1 answer:
Gnesinka [82]2 years ago
8 0

The random variable X is normally distributed with mean μ=30 and standard deviation σ =10. Use the transformation \frac{X-\mu}{\sigma} for calculating the probability. This value is called Z-score.

The Z score is Z=\frac{40-30}{10} =1.

Refer to the standard normal distribution table.

The probability

P(X>40)=P(Z>1)=1-P(Z

You might be interested in
PLEASE HELP PLEASE PLEASE
PolarNik [594]
The answer is b y=-2/(x+3)-4
5 0
3 years ago
Read 2 more answers
laura deposits $2000 into an account that pays simple interest at a rate of 2% per year. How much interest will she be paid in t
vladimir2022 [97]
She will be paid $2,240.

The equation to use for this is: A=P(1+rt)

More specifically:
A = 2000(1 + (0.02 × 6)) = 2240
A = $2,240.00
5 0
3 years ago
For the function g(x)=3x^2-3x-9 what is the value of g(4)
Annette [7]
G(4) = 3x^2 - 3x - 9

Since the g(4) would be g(x) if you didn't know the number. So, substitute all of the x's for 4.

g(4) = 3(4)^2 - 3(4) - 9

g(4) = 3(16) - 12 - 9

g(4) = 48 - 3

g(4) = 45

I hope this helps you!
3 0
2 years ago
Convert 12 quarts to gallons
jek_recluse [69]
3 gallons because there are 4 quarts in a gallon and 12/4=3
4 0
3 years ago
Read 2 more answers
Please help i have to turn in in 8 mins....thanks :)
pychu [463]

6√3

Step-by-step explanation:

6 is x. side across from right angle (12) is 2x. so 6x2 to get 12. missing side is x√3. so 6√3

6 0
2 years ago
Read 2 more answers
Other questions:
  • Anyone for geometry #’s 5 & 6
    5·1 answer
  • Approximate ∛-25 to the nearest tenth.
    5·2 answers
  • Pls help me out!!!!!!!
    13·1 answer
  • The daily wages paid to five workers are $25, $40, $65, $55, and $50. What is the mean absolute deviation of this data set? Roun
    7·2 answers
  • in a race there are 15 Runners the trophies for the race are awarded to the races finish and 1st through 3rd place and how many
    11·2 answers
  • At the snack bar, 12 hot dogs are sold for every 10 hamburgers sold. At this rate, how many hamburgers will be sold if 66 hot do
    14·2 answers
  • Help please. I think it's B but not sure.
    6·1 answer
  • A garment shop earns a profit of ₹100 on every shirt and loss ₹50 on every sale of half pant. (1) The shop sells in a month 50 h
    9·1 answer
  • Find the slope of the line that passes through these points. (4, 5) (7, 8)
    8·1 answer
  • Plz help due today this is one question plz show work
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!