Answer:
A.
Step-by-step explanation:
We want to find the Z-score of if the population mean is ,and the population standard deviation is .
We use the formula:
We substitute the values to obtain:
The correct answer is A.
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Hello!
✧・゚: *✧・゚:* *:・゚✧*:・゚✧
❖ The 3 remains the same when 9,321 is rounded because if you look to the right of the number in the hundreds place, you see 2. 5 and above, give it a shove (round up). 4 and below, leave it alone (round down). Since 2 is below 5, we leave it alone. So 9,321 is rounded to 9,300.
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~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ
Hello there!
Evaluate
-3b² + 25
For b = 7
-3(7)² + 25
-3(49) + 25
-147 + 25
= -122
I hope that helps!