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Ratling [72]
2 years ago
14

Help, please and thank you

Mathematics
1 answer:
erma4kov [3.2K]2 years ago
8 0

Answer:

  48%

Step-by-step explanation:

The conditional probability definition applies.

  P(med | cold) = P(med & cold) / P(cold)

The probabilities are the table numbers divided by the total of all numbers in the table (100). Since that dividend is the same for all, we can basically ignore it and just use the table numbers.

  P(med | cold) = (12)/(8+12+5) = 12/25 = 48/100

  P(med | cold) = 48%

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Mars2501 [29]

Answer:

For this case we want to determine if  there is enough evidence to establish whether the proportion of citizens supporting an increase in cigarette taxes is significantly greater than .66 (a;ternative hypothesis) and then the system of hypothesis are:

Null hypothesis: p \leq 0.66

Alternative hypothesis: p >0.66

And the estimated proportion for this case would be:

\hat p =\frac{X}{n} = \frac{1020}{1500}=0.68

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  

Solution to the problem

For this case we want to determine if  there is enough evidence to establish whether the proportion of citizens supporting an increase in cigarette taxes is significantly greater than .66 (a;ternative hypothesis) and then the system of hypothesis are:

Null hypothesis: p \leq 0.66

Alternative hypothesis: p >0.66

And the estimated proportion for this case would be:

\hat p =\frac{X}{n} = \frac{1020}{1500}=0.68

4 0
4 years ago
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4 0
3 years ago
Read 2 more answers
Help Please (I needed 20 characters)
liq [111]
Is a (0,18) ? not sure though baha.
4 0
3 years ago
Which fraction is equivalent to 0.3636?
deff fn [24]
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3 0
3 years ago
Need help solving please ​
zzz [600]

Answer:

2

Step-by-step explanation:

because u have to single out the 3 x by subtracting 2 on both sides

8 0
3 years ago
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