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#1
Oct 23 2015 07:44pm
I'm trying to help him with some simple homework but I was terrible at math and I don't know what to do here. I dont want to look like a fuckup in front of my son... We can't do 15 or 16 ill repay anyone who helps the best I can.

This post was edited by dpalu855 on Oct 23 2015 07:45pm
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#2
Oct 23 2015 08:09pm
I got 14-15 done for him but I'm still struggling with 16, I really didn't learn this in school and his book doesn't help much.
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#3
Oct 23 2015 08:30pm
Done. Thanks.
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#4
Oct 24 2015 01:07am
You're sun lucke to had great pap lik u.
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#5
Oct 24 2015 11:58am
For Number 15:

1.5% of the 4000 have the disease
(4000)(.015) = 60
Of the 60, 90% test positive so : (60)(0.9) = 54 people test positive <---Part A

The test is 90% accurate (true positive), so (54)(.9) = 48.6 rounded to 49 people have the disease <-- Part B

If you're not familiar with (x)(y) it just means to multiply those values
The wording of the problem is rather confusing
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#6
Oct 24 2015 11:59am
Quote (Fioravanti @ Oct 24 2015 01:58pm)
For Number 15:

1.5% of the 4000 have the disease
(4000)(.015) = 60
Of the 60, 90% test positive so : (60)(0.9) = 54 people test positive <---Part A

The test is 90% accurate (true positive), so (54)(.9) = 48.6 rounded to 49 people have the disease <-- Part B

If you're not familiar with (x)(y) it just means to multiply those values
The wording of the problem is rather confusing


yer yer

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#7
Oct 24 2015 12:52pm
Quote (Fioravanti @ Oct 24 2015 10:58am)
For Number 15:

1.5% of the 4000 have the disease
(4000)(.015) = 60
Of the 60, 90% test positive so : (60)(0.9) = 54 people test positive <---Part A

The test is 90% accurate (true positive), so (54)(.9) = 48.6 rounded to 49 people have the disease <-- Part B

If you're not familiar with (x)(y) it just means to multiply those values
The wording of the problem is rather confusing


Thanks for the input. I got the same answers but the wording of all the problems is what tripped me up.
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#8
Oct 30 2015 01:21am
for 16
mode is smaller than mean and median: right-skewed
50% (by definition of median)
50% (by definition of median)
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#9
Oct 30 2015 07:27pm
you couldnt even post the image with proper orientation smh.
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