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Mathematics 9 Online
zarkam21:

Help please

zarkam21:

@Vocaloid

zarkam21:

1 attachment
ThatCreepyBoy:

@Vocaloid Can you help please?

Vocaloid:

To find the are between two z-scores, find the probability associated with each z-score and subtract " i would suggest writing this down somewhere

Vocaloid:

Use either a z-table or a z-to probability calculator

zarkam21:

0.3023 is for the z-value 0.85 right

Vocaloid:

That doesn't seem right Make sure you are using a left tail probability calculator

zarkam21:

1 attachment
Vocaloid:

That's a p-value calculator not a probability calculator

jadadunn:

Vocaloid when are you finished helping her would you help me please.

zarkam21:

I would try to find a z score calculator right?

Vocaloid:

https://measuringu.com/pcalcz/

Vocaloid:

Select one tailed

zarkam21:

80.23

Vocaloid:

Good now keep going

zarkam21:

8.69

Vocaloid:

???

zarkam21:

wouldn't that be for -1.36

zarkam21:

I got 8.69

Vocaloid:

Ah ok Now keep going

zarkam21:

well now that I have the two numbers?..

Vocaloid:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Vocaloid To find the are between two z-scores, find the probability associated with each z-score and subtract " i would suggest writing this down somewhere \(\color{#0cbb34}{\text{End of Quote}}\)

zarkam21:

80.23-8.69=71.54

Vocaloid:

Good now we normalize this by dividing by 100

Vocaloid:

So .7154 is your answer

Vocaloid:

Repeat the process for the next problem

zarkam21:

okay doing the next one I get 0.78=78.23 -1.22=11.12 78.23-11.12=67.11 67.11/100=0.6711

Vocaloid:

Good that's it

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