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
Tamiku [17]
3 years ago
12

Let X be a normal random variable with mean 40 and standard deviation 2. Find P(X < 28).

Mathematics
1 answer:
Vikki [24]3 years ago
5 0

Answer:

0

Step-by-step explanation:

Given :

Mean = 40 ; Standard deviation = 2

P(x < 28)

Obtain the Zscore :

Z = (x - mean) / standard deviation

P(Z < (28 - 40) / 2))

Z = (28 - 40) / 2

Z = - 12 / 2

Z = - 6

P(Z < - 6) = 0.000000

You might be interested in
When should you use dot plots and why?
MariettaO [177]
Dot plots are used for continuous, quantitative, univariate data. They can be also used for finding outliers, compare distributions, locate the central tendency of your data, etc…
3 0
2 years ago
.
Maksim231197 [3]

Answer:

D. x=1

Step-by-step explanation:

Image can be rewritten as 3x + 6 = 9.

Solve for x.

3x +6 = 9

Isolate x by subtracting 6 from both sides.

3x = 3

Get rid of the 3 by dividing by 3 on both sides.

x = 1

Hope this helped.

8 0
2 years ago
I posted this 3 times already HELPPP!!!!
JulsSmile [24]
Idk I’m sorry I would love too help you
8 0
3 years ago
Read 2 more answers
If you like graphing this is for you :D​
Pavel [41]

Answer:

You are trying to find the x-value when the y-value is 2. On the graph, the x-value is -3 when the y-value is 2. So, the x-value when f(x)=2 is -3.

:)

3 0
2 years ago
Chang has 2 shirts: a white one and a black one. He also has 2 pairs of pants, one blue and one tan. What is the probability, if
weqwewe [10]

Answer:

The probability that Chang gets dressed with a white shirt and tan pants is 25%.

Step-by-step explanation:

Given that Chang has 2 shirts, a white one and a black one, and he also has 2 pairs of pants, one blue and one tan, to determine what is the probability, if Chang gets dressed in the dark, that he winds up wearing the white shirt and tan pants the following calculation must be performed:

Each shirt = 50% chance

Each pants = 50% chance

0.50 x 0.50 = X

0.25 = X

Therefore, the probability that Chang gets dressed with a white shirt and tan pants is 25%.

5 0
3 years ago
Other questions:
  • 88 is 80 percent of what number
    9·1 answer
  • PLEASE HELP FAST!!!
    14·2 answers
  • What is the complement of 11 degrees
    10·2 answers
  • Use the bar diagram to write an equation. Then solve. Drag numbers to complete the equations.
    9·1 answer
  • What is the slope of the line passing through the points (1, -5) and (4, 1)?
    10·2 answers
  • Gerald drives 200 miles in 2 1/2 hours. what is gerald's average speed?
    14·1 answer
  • Which decimal has the same value as 2/5
    5·2 answers
  • In her sixth-grade social studies class, Mrs. Davis has 22 students, 12 of whom are girls. If one
    9·2 answers
  • Select the correct answer.
    6·1 answer
  • Im wasting so many points on these<br> help please
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!