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Shtirlitz [24]
3 years ago
13

Pozele sunt atasate va rog urgeeeeent

Mathematics
1 answer:
Nookie1986 [14]3 years ago
3 0

Answer:

it's not English, sorry I can't help.

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If you roll two fair six sided dice what is the probability that at least one die shows a three
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Answer:

idc

Step-by-step explanation:

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4 years ago
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A survey in Men’s Health magazine reported that 39% of cardiologists said that they took vitamin E supplements. To see if this i
zzz [600]

Answer:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

Step-by-step explanation:

Information given

n=100 represent the random sample taken

X=36 represent the number of people that take E supplement

\hat p=\frac{36}{100}=0.36 estimated proportion of people who take R supplement

p_o=0.39 is the value that we want to test

\alpha=0.05 represent the significance level

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true proportion is equatl to 0.39 or not, the system of hypothesis are.:  

Null hypothesis:p=0.39  

Alternative hypothesis:p \neq 0.39  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info we got:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

8 0
3 years ago
CORRECT ANSWER GETS BRAINLIEST!! PLSS HELP!!
prohojiy [21]

Answer:

Landing on  a 1 or 2.

25% means 0.25, or 2/8 chance of winning. The spinner has 2 out of 8 as 1 or 2.  

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15. An irregular pentagon has side lengths of (x + 3), (2x - 4), (4x + 5),
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I’m my opinion I thick it could be A
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Use the quadratic formula to solve x^2-4x+3. Show your work. Then describe the solution
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Quadratic formula is x=(-b+-sqrt(b^2-4ac))/(2a)

a= 1, b=-4, and c=3

Therefore, x=(-(-4)+-sqrt((-4)^2-4(1)(3))/(2(1))

Solve for both the plus and minus equations; the answers will be the roots to the quadratic equation.
4 0
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