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bulgar [2K]
3 years ago
14

Q. If heights of 3rd graders follow a normal distribution with a mean of 52 inches and a standard deviation of 2.5 inches, what

is the z score of a 3rd grader who is 47 inches tall?
A. z=-5
B. z=-2
C. z=2
D. z=5
Mathematics
1 answer:
zaharov [31]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

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7 0
1 year ago
joseph read 12 books in 2 months. what was his rate of reading in books per month ? Express your answer in simplest form
MrRa [10]

Answer: He read 6 books in 1 month. 6:1 is the unit rate

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6 0
4 years ago
Please solve it <br><br> it's simultaneous equation involving logarithm
torisob [31]
I cant help you here. I am bad at math!!!
8 0
4 years ago
Tell whether the statement is true or false. If w is 25% of Z, then Z:W is 75:25
melamori03 [73]
False.
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If Z:W was 75:25, it would be wrong because 25 is 33% of 75, not 25%.
7 0
3 years ago
0.5 is 30 minutes how do I work out more times e.g. How many minutes is 0.45 or 0.48 I don't know how to do it help
kompoz [17]
I dont know if this will help you, but a 15th (.15) of an hour is 9 minutes!
So it'd be
.15=9 minutes
.30=18 minutes
.45=27
.60=36
.75=45 
.90=54
and obviously
1.0 is 60 minutes
(((EVERY .05 IS THREE MINUTES))))
3 0
3 years ago
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