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
-Dominant- [34]
3 years ago
7

Heights of 10 year olds, regardless of gender, closely follow a normal distribution with mean 55 inches and standard deviation 6

inches. (a) what is the probability that a randomly chosen 10 year old is shorter than 48 inches? (please round to four decimal places)
Mathematics
1 answer:
Firlakuza [10]3 years ago
4 0
Given:
μ = 55 in, population mean
σ = 6 in, population standard deviation

Part (a)
x = 48 in, the random variable
Calculate the z-score.
z = (x - μ)/σ
   = (48 - 55)/6
   = -1.667
From standard table, obtain
P(X < 48) = 0.12167 

Answer: 0.1217  (tyo 4 dec.places)

You might be interested in
Place decimal points in 34, 4, and 417 so that the sum of the three numbers is 7.97.
KIM [24]
3.4+0.4+4.17=7.97 you just have to try different combinations of different numbers with the decimals.
                                                             





8 0
4 years ago
Solve the equation 2x²-x=0
Marta_Voda [28]
Factor

x(2x-1)=0

x = 1/2, 0
8 0
3 years ago
Read 2 more answers
What number makes the equation true? [???] ÷ 8 = 4​
Elina [12.6K]

Answer:

32

Step-by-step explanation:

math

................

3 0
3 years ago
Read 2 more answers
Which property of real numbers is shown below? 3 + ((-5) + 6) = (3 + (-5)) + 6 commutative property of addition identity propert
Sati [7]

Answer:

The correct answer is the associative property of addition.

Step-by-step explanation:

This property states that no matter which way we group things when adding, they will still create the same outcome. Since all of the symbols are addition, the answer is the same.

5 0
3 years ago
Read 2 more answers
Kellogg's produced 715000 boxes of cornflakes this year. This was 110% of annual production last year. What was last year's annu
Charra [1.4K]
Let last year product be x boxes.

110% of x means \displaystyle{  \frac{110}{100}\cdot x.

Thus, we solve the equation:

                                  \displaystyle{ \frac{110}{100}\cdot x=715,000.

Multiplying both sides by  \displaystyle{ \frac{100}{110}, we have:

                    \displaystyle{ x=715,000 \cdot \frac{100}{110}=650,000.


Answer: Last <span>year's annual production was 650,000 boxes.</span>
6 0
3 years ago
Other questions:
  • Given here are a set of sample data: 12.0, 18.3, 29.6, 14.3, and 27.8. the sample standard deviation for this data is equal to _
    7·1 answer
  • Simplify the following polynomial expression. (5x^4 - 9x^3 + 7x - 1) + (-8x^4 + 4x^2 - 3x + 2) - ( -4x^3 + 5x - 1)( 2x - 7)
    6·1 answer
  • Reanna eats 72 chicken wings. Jesus eats 102 chicken wings more than Reanna. How many chicken wings do they eat altogether?
    12·2 answers
  • Marty makes $1,050 weekly working as a plumber. After being hit by a car, he requires back surgery. Marty is billed $145,000 for
    12·1 answer
  • Letters from ww1 soldiers to families
    15·2 answers
  • Find the triangles area drawing not to scale.
    10·1 answer
  • Polynomial function F(x)=2-11x+2x²​
    9·1 answer
  • Which point in the coordinate plane represents the number 7+5i in the complex plane?
    14·1 answer
  • PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!!
    8·1 answer
  • I need some math help ​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!