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2 years ago

10 POINTS!! PPLZZZZZZ (MATH) :(stay safe):

Mathematics

1 answer:

tekilochka [14]2 years ago

6 0

Answer:

1.) 95

2.) 20

3.) 75

Step-by-step explanation:

you subtract the give values by 180 to get the answer

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A) 5x – 6y = 25 [x, y = 10]

lora16 [44]

Ok so what u want to 58

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2 years ago

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Goofy's fast food center wishes to estimate the proportion of people in its city that will purchase its products. Suppose the tr

Westkost [7]

Answer:

The probability that the sample proportion will differ from the population proportion by greater than 0.03 is 0.0143.

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes n ≥ 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

$\mu_{\hat p}=p$

The standard deviation of this sampling distribution of sample proportion is:

$\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}$

The sample selected consists of n = 254 individuals. The sample is quite large, i.e. n = 254 > 30. So the central limit theorem can be applied to approximate the distribution of sample proportion of people in the city that will purchase the products of Goofy's fast food.

The mean is:

$\mu_{\hat p}=p=0.05$

And the standard deviation is:

$\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.05(1-0.05)}{254}}=0.0137$

Now, we need to compute the probability that the sample proportion will differ from the population proportion by greater than 0.03.

That is:

$\hat p-p>0.03\\\hat p -0.05>0.03\\\hat p>0.08$

Compute the value of $P(\hat p>0.08)$ as follows:

$P(\hat p>0.08)=P(\frac{\hat p-\mu_{\hat p}}{\sigma_{\hat p}}>\frac{0.08-0.05}{0.0137})$

$=P(Z>2.19)\\=1-P(Z$

*Use a z-tale for the probability.

Thus, the probability that the sample proportion will differ from the population proportion by greater than 0.03 is 0.0143.

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2 years ago

Find the percent of the number.

trasher [3.6K]

A.
1.84
will be the answer

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3 years ago

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What should be added to 9x to get 15x ? with formal

lesya692 [45]

Answer:

15x-9x=6x

please mark me as brainliest

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2 years ago

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Central limit theorem works because if the sample size is sufficiently large, then the theory assumes the majority of the observ

olga_2 [115]

Answer: normally distributed and will have a mean that will be approximately equal to the population mean.

Step-by-step explanation: The central limit theorem tries to show that regardless to the variables in a statistical distribution,the sample mean will tend toward approximating the mean of the population for sufficiently large sample size, a sample size or observations that are greater than or equal to 30 is sufficiently large enough.

The theorem helps to understand that as the sample size increases the chances of getting a sample mean that is approximately Equal to the population mean will be high, and the variance will continue to reduce.

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2 years ago