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2 years ago

In 2014, the population of Arizona was approximately 5.23 x 10. if it’s land area

1 answer:

7 0

I don’t understand what you’re trying to find! I think it cut off. If you were talking abt the multiplication it makes 52.3

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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:

$P(x \le 21) = 0.69146$

4 0

3 years ago

What is the one shape of cross-section we could create by slicing the cylinder perpendicular to its base

Inga [223]

Answer:

rectangle

Step-by-step explanation:

A rectangle represents a figure with four sides having equal opposite sides and the inside angle between the two adjacent sides is ninety degree.

When any plane is made to pass through the cylinder creating a cross section which is perpendicular to its base, it results a two-dimensional cross sectional shape of a rectangle.

4 0

3 years ago

The volume of the triangluar block is 4 cubic inches. What is the approximate length of y?

Artist 52 [7]

The volume of the triangluar block is 4 cubic inches. What is the approximate length of y? -- 2.8 inches

3 0

3 years ago

What is located closest to the orgin

jeka94

The zero is closed to the origin

6 0

3 years ago

Read 2 more answers

Antonia buys a box of 36 soft pretzels she wants to distribute them evenly between her , and her 8 friends and her three brother

kirza4 [7]

Answer:

Step-by-step explanation:

36 pretzels divided by 9 people (Antonia + 8 friends) = 4 per person

36 / 9 = 4

4 0

3 years ago