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2 years ago

Will choose Brainliest.

Mathematics

1 answer:

oksano4ka [1.4K]2 years ago

4 0

That part is total cookies as per algebraic formula x^2-(a+b)x+ab=0

Hence

The inequality is

$\\ \rm\rightarrowtail x^2-30x+224>=0$

$\\ \rm\rightarrowtail (x-14)(x-16)>=0$

$\\ \rm\rightarrowtail 14\leqslant x\leqslant 16$

Solution range

[14,16]

Atleast means the range

16-14
2

Atleast 2 more than Martha

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Step-by-step explanation:

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3 years ago

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Answer: Here Take a Look.

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2 years ago

Suppose 60% of American adults believe Martha Stewart is guilty of obstruction of justice and fraud related to insider trading.

Ierofanga [76]

Answer:

Since the sample size is large enough (n>30) and the probability of success is near to 0.5, and we have that $n\hat p = 60>10$ and $n(1-\hat p) = 40>10$ we can assume that the distribution for $\hat p$ is normal

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So then we can conclude that the best answer would be:

c. approximately Normal, with mean 0.6 and standard error 0.04899

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$p$ represent the real population proportion of interest

$\hat p$ represent the estimated proportion for the sample

n is the sample size required (variable of interest)

Solution to the problem

The population proportion have the following distribution

$\hat p \sim N(\hat p,\sqrt{\frac{\hat p(1-\hat p)}{n}})$

The mean is given by:

$\mu_p = 0.6$

$\sigma_p = \sqrt{\frac{0.6*(1-0.6)}{100}}=0.04899$

So then we can conclude that the best answer would be:

c. approximately Normal, with mean 0.6 and standard error 0.04899

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago