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
There are two decks of cards.  Each deck has a red, a yellow, a blue, and a green card in it.  If a card is drawn, from the firs
marta [7]
Probability of choosing Red first is 1/4
Probability of choosing Green second is 1/4 (this coming from the second deck)
The probability of choosing in this order is 1/4 * 1/4 = 1/16

Probability of choosing Green first is 1/4
Probability of choosing Red second is 1/4
The probability of choosing in this order is 1/4*1/4 = 1/16

The total probability of success is 1/16 + 1/16 = 2/16 = 1/8
6 0
3 years ago
Please help me&lt;3<br> Thank you so so much!:)
3241004551 [841]
You need to add everything, the answer is D
5 0
3 years ago
Explain how to find 40×50 using mental math
Dennis_Churaev [7]
4*5 is 20
add 2 zeroes to the end because of the two you took out from 40 and 50
40*50=2000
6 0
4 years ago
Read 2 more answers
10 3 -4 -11. arithmetic or geometric​
Dominik [7]

Answer:

Arithmetic (sequence?)

Step-by-step explanation:

Is arithmetic because the differences of each number is a constant -7

4 0
3 years ago
Read 2 more answers
3x+2y+2z = -2<br> 2x+y-z = -2<br> x-3y+z = 0
KatRina [158]

Here you go, I really hope this helps

If you can, it would be appreciated if you can mark this as Brainliest. I'm trying to rank up

7 0
3 years ago
Read 2 more answers
Other questions:
  • Rationalise the denominator.<br> 2+square root of 2 divided by4 minus the square root of2
    15·1 answer
  • Circletown's limits form a perfectly circular shape. It has a population of 20000 and a population density of 480 people per squ
    15·2 answers
  • Which is the 8th term of th geometric sequence 1024,256,64,...?
    12·1 answer
  • Find two numbers such that the sum of their squares is 100. The square of the larger number is equal to the sum of the product o
    7·1 answer
  • Find the unit rate for a 13 once<br> package of pistachios that cost 5.99
    13·1 answer
  • It's been forever since u did it, someone please help​
    10·1 answer
  • Gordon answered 80% of the questions on the exam correctly. He answered 24 questions correctly. Enter the total number of questi
    12·1 answer
  • Help me please broskies
    10·1 answer
  • Quentin works as a used car salesman, where he earns $8 per hour and an average commission
    7·1 answer
  • 1. How can you find the volume of a prism?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!