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evablogger [386]
4 years ago
15

In a normal distribution, what is the probability that a randomly selected data value will fall within two standard deviations o

f the mean? Give your answer as a whole number percent.
Mathematics
1 answer:
Zepler [3.9K]4 years ago
5 0
The answer is 95%

This is something you should memorize. Specifically it is from the Empirical Rule (or 68-95-99.7 rule) which gives rough approximations of areas under the curve. 
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Hannah reads 3 pages every 8 minutes.
PilotLPTM [1.2K]
P = 3/8m, In other words, The number of pages she reads is equal to 3/8 times the number of minutes that she is reading for. We divide 3 by 8 to find out how many pages she reads per minute, which we can then times by how many minutes she is reading for to work out the total number of pages she has read. Hope this helps!
3 0
3 years ago
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Isabelle's school has a total of 486 seventh grade students. There are 3 technology classes, each with 27 seventh grade students
monitta

Answer:

1/6

Step-by-step explanation:

27 x 3 = 81

81/486 = 1/6 (486/81 = 6)

3 0
3 years ago
What is 3x^2-44y+3=
grin007 [14]

Answer:

good

Step-by-step explanation:

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3 years ago
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Take LCM ald then do in full process​please help me
Marina86 [1]

Answer:a) L.C.M OF 2,3,5 is 30

THEREFORE=60/30+15/30÷10/30-6/30

=60/30+15/30×30/10-6/30(DMAS)

=60/30+3/2-6/30

=60+45/30 -6/30(ADDITION FIRST THEN SUBTRACTION.

=105/30-6/30

=105-6/30

=99/30

=33/10

b)(3+1/2)÷(2-1/2)=L.C.M IS 2,=(6+1/2)÷(4-1/2)=7/2÷3/2=7/3

8 0
3 years ago
Which number is the additive inverse of -4<br> -442<br> O<br> -4<br> O<br> 45<br> V
frozen [14]

Answer:

it's the last one i mean 4&1/4

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3 years ago
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