Question

Alice has measured the hemoglobin levels of 200 people. If the data follows a normal distribution with a mean of 10 and a standard deviation of 1, what can you conclude?

About 64 people have hemoglobin levels less than 9.

About 32 people have hemoglobin levels less than 9.

About 64 people have hemoglobin levels less than 8.

About 32 people have hemoglobin levels less than 8.

Answer 1

@swissgirl

Answer 2

@perl

Answer 3

Use the empirical rule

Answer 4

About 64 people have hemoglobin levels less than 9.That what I got @drawar

Answer 5

That's not correct. How did you arrive at that answer?

Answer 6

Dividing than subtracting to get the answer.

Answer 7

@drawar

Answer 8

Show me your work please...

Answer 9

200 and 10 divide than adding

Answer 10

Doesn't make any sense. Do you even know what the empirical rule is?

Answer 11

nope explain to me

Answer 12

and show step by step for the answer for my study guide please. my teacher don't explain nothing.

Answer 13

http://en.wikipedia.org/wiki/68-95-99.7_rule, once you read it, you can solve this problem on-the-fly

Answer 14

Wikipedia lies.

Answer 15

It doesn't. If you don't read it, your loss.

Answer 16

page does not exist tbh

Answer 17

okay bye

Answer 18

oops, remove the colon at the end of the page, you'll be able to access it

Answer 19

http://en.wikipedia.org/wiki/68-95-99.7_rule

Answer 20

Well, bye then, I think after reading it you can work out the solution yourself without any help. Good luck!

Answer 21

Got the answer option b

Answer 22

Now it's correct.