Answer:
1.5
Step-by-step explanation:
The mean is the Middle number.
1 standard deviation in both sides of 7.5 makes it between 6 and 9.
<u>What is the </u><u>"common difference"</u><u> in 6 to 7.5 and from 7.5 to 9?</u>

and

So, we would say the standard deviation is 1.5
Answer choice A is right.
Answer:
7.49
Step-by-step explanation:
22.47 divided by 3
Step-by-step explanation:
she needs to swap 5.2 for 5.02
since 5.02 is smaller than 5.2
Answer:
500
Step-by-step explanation:
Answer:
Step-by-step explanation:
I don't say u must have to mark my and as brainliest but if it has really helped u then plz don't forget to thank me.....