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Ahat [919]
2 years ago
8

I domt understand slope at all

Mathematics
1 answer:
photoshop1234 [79]2 years ago
7 0

slope = 2 and y-intercept = 0

the equation of a line in ' slope- intercept form ' is

y = mx + c  ( mis the slope and c the y-intercept )

given 2x - y = 0 ( add y to both sides )

2x = y or y = 2x + 0 ← in slope-intercept form

with slope m = 2 and y-intercept c = 0


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A random sample of 100 observations from a quantitative population produced a sample mean of 22.8 and a sample standard deviatio
natima [27]

Answer:

We conclude that the population mean is 24.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 24

Sample mean, \bar{x} = 22.8

Sample size, n = 100

Alpha, α = 0.05

Sample standard deviation, s = 8.3

First, we design the null and the alternate hypothesis

H_{0}: \mu = 24\\H_A: \mu \neq 24

We use Two-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{22.8 - 24}{\frac{8.3}{\sqrt{100}} } = -1.44

We calculate the p-value with the help of standard z table.

P-value = 0.1498

Since the p-value is greater than the significance level, we accept the null hypothesis. The population mean is 24.

Now, z_{critical} \text{ at 0.05 level of significance } = \pm 1.96

Since,  the z-statistic lies in the acceptance region which is from -1.96 to +1.96, we accept the null hypothesis and conclude that the population mean is 24.

7 0
3 years ago
I need help on this one
miv72 [106K]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Which expression is equivalent to this one?
Alinara [238K]

Hello,

Which expression is equivalent to this one?

1/6(x - 18)

Distributive property: (1/6x) - (1/6 x 18)

= 1/6x

= -18

Answer: 1/6x * (-18)

4 0
3 years ago
How many times larger is 4x10^7 than 5x10^5
irina1246 [14]

Answer:

8 times larger

Step-by-step explanation:

4 · 10^{7} = 4 · 10 · 10 · <u>10</u> · <u>10</u> · <em>10</em> · <em>10</em> · 10

4 · 100 · <u>100</u> · <em>100</em> · 10

400 · 10000 · 10

= 40000000

5 · 10^{5} = 5 · 10 · 10 · <u>10</u> · <u>10</u> · 10

50 · 100 · <u>100</u> · 10

5000 · 1000

= 5000000

40000000 ÷ 5000000 = 8

5 0
3 years ago
The total cost of four pens and seven mechanical pencils is $13.25. The cost of each pencil is .75 cents. Write an equation to f
Dovator [93]
X = pens and y = pencils

4x + 7y = 13.25
y = 0.75

4x + 7(0.75) = 13.25 
4x + 5.25 = 13.25
4x = 13.25 - 5.25
4x = 8
x = 8/4
x = 2 <===so each pen cost 2 bucks
5 0
3 years ago
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