Slope = 5 , passes through A(- 3, 2)

1 answer:

3 0

y=2x−1. Explanation: the equation of a line in slope-intercept form is. ∙xy=mx+b. where m is the slope and b the y-intercept. here m=2. ⇒y=2x+b←is the partial equation. to find b ...

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A research company desires to know the mean consumption of meat per week among people over age 23. A sample of 164 people over a

Elan Coil [88]

Answer:

The 80% confidence interval for the mean consumption of meat among people over age 23 is between 4 and 4.2 pounds.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.8}{2} = 0.1$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.1 = 0.9$ , so $z = 1.28$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.28*\frac{0.7}{\sqrt{164}} = 0.07$

The lower end of the interval is the mean subtracted by M. So it is 4.1 - 0.07 = 4.03 pounds

The upper end of the interval is the mean added to M. So it is 4.1 + 0.07 = 4.17 pounds

Rounded to one decimal place

The 80% confidence interval for the mean consumption of meat among people over age 23 is between 4 and 4.2 pounds.

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2 years ago

From a survey of 100 people we found that 62 drink pepsi, 36 drink coke and 30 drink both. How many drink only Coke? How many dr

Wittaler [7]

The numbers aren't accurate, they dont add up

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3 years ago

I need help this is urgent!!

harina [27]

If you need an equation it is -3.4x=21.5

You simply divide both sides by -3.4 to get x=-6.32

if that's not right then just get on a calculator and calculate by doing what I said to divide

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3 years ago

Eight less than 7.2 times a number is -29.6 wrote out in numbers

enot [183]

7.2x - 8 = -29.6 that is your answer wrote out in numbers.

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3 years ago

A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.

Whitepunk [10]

Answer:

$A=81\pi\ m^{2}$