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
mihalych1998 [28]
3 years ago
7

a normal distribution has a mean of 10 and a standard deviation of 1 what is the probability of selecting a number between 8 and

11
Mathematics
1 answer:
rusak2 [61]3 years ago
5 0

Answer:

0.815

Step-by-step explanation:

First, find the z-scores.

z = (x − μ) / σ

z₁ = (8 − 10) / 1

z₁ = -2

z₂ = (11 − 10) / 1

z₂ = 1

P(-2 < Z < 1) = P(Z < 1) − P(Z < -2)

Use a chart, calculator, or the empirical rule to find the probability.

Using the empirical rule:

P(-2 < Z < 1) = 0.84 − 0.025

P(-2 < Z < 1) = 0.815

Using a chart:

P(-2 < Z < 1) = 0.8413 − 0.0228

P(-2 < Z < 1) = 0.8185

You might be interested in
You borrow $2000 for three years at an annual interest rate of 12% what is the total cost of the loan at the end of the three ye
Irina-Kira [14]

Answer:

2,391 paid altogether. The interest Rate was another 391 dollars.

Step-by-step explanation:

8 0
3 years ago
Please help step by step
TEA [102]

Answer:

i have made it in above picture

6 0
3 years ago
Answer for brainliest please
cestrela7 [59]

Answer:

Scale factor = 2 for C

Scale factor = 2 for D

Scale factor = 2 for B

Step-by-step explanation:

Shape C has the dimensions of 2 x 6

Shape A has the dimensions of 1 x 3

Shape C is exactly 2 times an englargement of A because:

multiply 1 (dimension of A) times 2 (scale factors) = 2 (dimension of C)

multiply 3 (dimension of A) times 2 (scale factors) = 6 (dimension of C)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Shape D has the dimensions of 2 x 6

Shape A has the demensions of 1 x 3

Shape D is exactly 2 times an englargement of A because (same as C):

multiply 1 (dimension of A) times 2 (scale factors) = 2 (dimension of D)

multiply 3 (dimension of A) times 2 (scale factors) = 6 (dimension of D)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Shape B has the dimensions of 3 x 9

Shape A has the demensions of 1 x 3

Shape B is exactly 3 times an englargement of A because:

multiply 1 (dimension of A) times 3 (scale factors) = 3 (dimension of B)

multiply 3 (dimension of A) times 3 (scale factors) = 9 (dimension of B)

7 0
2 years ago
A rain gutter is to be constructed of aluminum sheets 12 inches wide after marking off legs 4 inches from each edge this blank i
DedPeter [7]
<span>A(<span>90∘</span>)=16sin<span>90∘</span>(cos<span>90∘</span>+1)=16×1×(0+1)=16 i think

</span>
8 0
3 years ago
Sadie plans to install new bookcases along a wall in her room her wall measures 12 2/5 feet long and each bookcase measures 3 3/
Amiraneli [1.4K]

Answer:

3 bookcases

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • −5(x + 4) + 21 ≥ −3 + 4(x − 8)
    10·2 answers
  • 1)Choose the graph below that correctly represents the equation 15x - 5y = 30.
    10·2 answers
  • Factor 6m^2+25mn+11n^2 and if you can please tell me a step-by-step explanation, please! Thanks :)
    11·2 answers
  • Rewrite the equation 3x+4y=20 in slope intercept form
    8·1 answer
  • I need help please ​
    10·2 answers
  • Help get 20 points for you!
    11·2 answers
  • Simplify i^38<br><br> 1) i<br><br> 2) -1<br><br> 3) -i<br><br> 4) 1
    6·2 answers
  • The legend on a map states that
    12·1 answer
  • The O'Neals purchased 2 adult and
    7·1 answer
  • Bill owed his brother $21.50, but was able to pay him back $18.75. How much does Bill owe his brother now?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!