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Mashcka [7]
3 years ago
15

Statistics... Help!

Mathematics
1 answer:
Leokris [45]3 years ago
4 0

Answer:

a) 0.5233 = 52.33% probability of picking someone who has the disease.

b) 0.9091 = 90.91% probability of picking someone who tests negative, given that he/she did not have the disease

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

a) What is the probability of picking someone who has the disease.

132 + 25 = 157 people have the disease

132 + 25 + 13 + 130 = 300 people total

157/300 = 0.5233

0.5233 = 52.33% probability of picking someone who has the disease.

b) What is the probability of picking someone who tests negative, given that he/she did not have the disease?

143 people did not have the disease.

130 tested negative. So

130/143 = 0.9091

0.9091 = 90.91% probability of picking someone who tests negative, given that he/she did not have the disease

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What are the intercepts of the line 2x + 4y = 12?
Darina [25.2K]
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x int.= (6,0) 
y int.= (0,-3) 

by the way, when it's written like that, it's called standard form, so to find the intercepts on 2x=12+4y, you'd have to convert it into standard form (Ax=By=C) so you subtract 4y on both sides to make it 2x-4y=12, and then once you have it like that you can do the math to find the y and x intercepts.
</span>

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2 years ago
What is the value of x in this proportion? 5/6=−4x/+2 x=−2 4/5 x=−4 2/5 x=−5 1/5 x=−6 4/5
insens350 [35]

Answer:

x= -4 2/5

Step-by-step explanation:

firstly cross multiply 5/6=-4x/+2

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10=-24x

make x subject of formula

10/-24= ans

hope this helps

please rate brainliest!

6 0
2 years ago
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