Need help with math problem within the next 20 mins!?

Question

I'm taking a quiz and the only thing it's giving me is "Given a standard normal distrubution find the percent of data that is to the left of 2.53." I've looked in my book and still can't find anything. Can anyone help?

Answer 1

.9943
There is a table of normal probabilities in the back of your book.
You need to understand how to do various problems that use this table.

Answer 2

You need the mean and standard deviation. Subtract mean and your 2.53. Divide what you get by the standard deviation. What you get is the z score. There's a table to convert z score into % of data to the left of that.

If you aren't given mean and σ, then assume mean = 0 and σ = 1. In that case, 2.53 is your z and percent of data left of that is 99.4297%.

Answer 3

I don't know what subject that is in math. I think that the most advanced math I can do is geometry. For example, the formula for finding the area of a circle is Pi r squared. I learned this last year in fifth grade from the best math teacher ever! Mrs. Sauli. It doesn't hurt that she nice too.

Answer 4

Yep: pay attention in class, and you will understand. Apparently you didn't, and now you're expecting total strangers to bail your *** out. Bad strategy, man: you don't learn anything that way.

Answer 5

I don't think you should get help if you are taking a quiz! Good luck though :)

Answer 6

tou should asked a tutor

Answer 7

pay attention

listen carefully and attentively

no daydreaming

Answer 8

you need to know the mean in order to answer this.