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
qaws [65]
4 years ago
8

Spencer was 40 inches tall as a 4-year old which placed him in the top 10% of all children of similar age. the mean height for s

uch children is 38 inches. based on this information, what is the standard deviation?
Mathematics
1 answer:
Umnica [9.8K]4 years ago
4 0

The 90th percentile is 1.2816 standard deviations from the mean. That tells you the standard deviation is ...

... (40 in - 38 in)/(1.2816) ≈ 1.56 in

The standard deviation for height for 4-year olds seems to be 1.56 inches.

You might be interested in
Un fabricante de veleros está trabajando un velero donde el cliente le pidió que el área de la vela triangular fuera de 192 ft2
vladimir2022 [97]
Yes bdndjsjshshdjbfbdbejsbsbdjsjsnrjrnbdnrnr fork
3 0
3 years ago
What are two contributions to math that Leonardo Fibonacci made
jekas [21]
Fibonacci is famous for his contributions to number theory.

In his book, Liber abaci he introduce the Hindu-Arabic place-valued decimal systems and the use of Arabic Numerals  into Europe.He introduced the bar we use in fractions, previous to this, the numerator has quotations around it. The square root notation is also is Fibonacci method.

7 0
3 years ago
FindFind the length of the crust(arc) of the pizza
Soloha48 [4]

Answer:

29.3 cm

Step-by-step explanation:

converting 70 degrees into radians, we get=(7/18)×π

now we know,

length of the arc= {(7/18)×π} × 24 (radius of the circle)

= 29.3 cm

8 0
3 years ago
Evaluate each expression. 6 ÷ 6 + z + x − y; use x = 2, y = 5, and z = 6
Paladinen [302]

Answer:

4

Step-by-step explanation:

6/6+6+2-5=

5 0
4 years ago
Please answer the question below. please provide an explanation as well. thanks!
Elena-2011 [213]

Answer:

14

Step-by-step explanation:

Since S is the midpoint of RT, then RS = ST

RS = RT - ST = (3x + 7) - (x + 7) = 3x + 7 - x - 7 = 2x

so we get that RS = 2x

but since RS = ST, and RS=2x & ST=x+7

then 2x = x + 7

       2x-x = 7

        x = 7

ST = x+7 = 7+7 = 14

P.S. Hope it makes sense. If you have any questions, feel free to ask them in the comments senction. I'll be happy to help. Have a wonderful day!

7 0
2 years ago
Other questions:
  • A candidate for mayor plans to campaign at 5 shopping malls before the election. In how many different ways can the candidate sc
    13·1 answer
  • Is 4 yards bigger than 13 feet
    14·2 answers
  • A group of related facts that use the same numbers is called?
    6·1 answer
  • Which could be the first step in solving the equation represented by the model below?
    15·2 answers
  • Sandra has 1,120 photos. She wants to place them in a photo album. Each page in the album will hold 8 photos. She uses the expre
    14·1 answer
  • How many minutes in 4 hours
    8·1 answer
  • ‼️ASAP‼️What is the product?<br> (&lt;4) (3x2 -2) (4x2 + 5x)?
    9·1 answer
  • Rhonda deposited $3000 in an account in the Merrick National Bank, earning 4.2% interest, compounded annually. She made no depos
    12·1 answer
  • Again please
    11·2 answers
  • Um yeah so ignore the blue circles. I need your helpp ty &lt;3
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!