A set of data has a normal distribution with a mean of 5.1 and a standard deviation of 0.9. Find the percent of data between 4.2 and 5.1.
Answer: The correct option is B) about 34%
Proof:
We have to find 
To find
, we need to use z score formula:
When x = 4.2, we have:


When x = 5.1, we have:


Therefore, we have to find 
Using the standard normal table, we have:
= 

or 34.13%
= 34% approximately
Therefore, the percent of data between 4.2 and 5.1 is about 34%
Answer:
option d.
(9,-2)
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I have no idea I’m doing the same thing rn but good luck bro bro
Answer:
The simplest form of 1/2 x 2 is 2 or 2/1 or 4/2.
The simplest form of 3/8 is 3/8.
Step-by-step explanation:
(look at picture)