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3 years ago

When comparing the graphs of y = x and y > x, what is a difference in the graphs?

Mathematics

1 answer:

mars1129 [50]3 years ago

8 0

I donnt think that there is a solution, but could be wrong

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what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed

kramer

Answer:

$P(x \le 21) = 0.69146$

Step-by-step explanation:

The missing parameters are:

$n = 64$ --- population

$\mu = 20$ --- population mean

$\sigma = 16$ -- population standard deviation

Required

$P(x \le 21)$

First, calculate the sample standard deviation

$\sigma_x = \frac{\sigma}{\sqrt n}$

$\sigma_x = \frac{16}{\sqrt {64}}$

$\sigma_x = \frac{16}{8}$

$\sigma_x = 2$

Next, calculate the sample mean $\bar_x$

$\bar x = \mu$

So:

$\bar x = 20$

So, we have:

$\sigma_x = 2$

$\bar x = 20$

$x = 21$

Calculate the z score

$x = \frac{x - \mu}{\sigma}$

$x = \frac{21 - 20}{2}$

$x = \frac{1}{2}$

$x = 0.50$

So, we have:

$P(x \le 21) = P(z \le 0.50)$

From the z table

$P(z \le 0.50) = 0.69146$

So:

$P(x \le 21) = 0.69146$

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3 years ago

A gas station fills up at a rate of 7/8 per 9/10 of. aminute. what is the rate for one minute

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Step-by-step explanation:

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3 years ago

PLEASE HELP, WILL MARK BRAINILEST

Shkiper50 [21]

A because shes buying 4 chocolate bars and X is the amount of fruit snacks shes wanting to buy and its less than or equal to 25

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3×(5-2)=(blank×5) - (blank×2)

ale4655 [162]

Answer:

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Step-by-step explanation:

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3 years ago

How do I write 4,332 in scientific notation??

rodikova [14]

Answer:

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Step-by-step explanation:

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3 years ago

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