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3 years ago

5

Identify the angle rlationship in the table

2 answers:

lawyer [7]3 years ago

5 0

do you have a picture of the table

WITCHER [35]3 years ago

4 0

Make a picture of a table

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Which theory of migration states that people sailed down the west coast of North America to make settlements?

lara31 [8.8K]

The appropriate answer is b. the Northern Asia Coastal theory. This theory states that people entered North America by moving along the coast from north west Asia along the northern Pacific coastline using rafts or early designs of boats. It was previously thought that people entered north America by crossing the Bering Strait but new evidence contradicts this theory.

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4 years ago

Whitch number 4,5,6 is a solution of x+5>10

Alex73 [517]

: 6

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- i just plugged in every number in.
4 + 5 > 10
9 > 10? nope.

5+5 > 10
10 > 10 ? nope.

6+5 > 10
11 > 10? YES.

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3 years ago

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Marysya12 [62]

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3 years ago

Dairy cows at large commercial farms often receive injections of bST (Bovine Somatotropin), a hormone used to spur milk producti

ExtremeBDS [4]

Answer:

a) 26.33 kg/d and 29.67 kg/d

b) 94.5%

Step-by-step explanation:

a. Find a 99% confidence interval for the true mean milk production.

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

$\alpha = \frac{1-0.99}{2} = 0.005$

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 $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error 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.

$M = 2.575*\frac{2.25}{\sqrt{12}} = 1.67$

The lower end of the interval is the sample mean subtracted by M. So it is 28 - 1.67 = 26.33 kg/d

The upper end of the interval is the sample mean added to M. So it is 28 + 1.67 = 29.67 kg/d

The 99% confidence interval for the true mean milk production is between 26.33 kg/d and 29.67 kg/d

b. If the farms want the confidence interval to be no wider than ± 1.25 kg/d, what level of confidence would they need to use?

We need to find z initially, when M = 1.25.

$M = z*\frac{2.25}{\sqrt{12}} = 1.67$

$1.25 = z*\frac{2.25}{\sqrt{12}} = 1.67$

$2.25z = 1.25\sqrt{12}$

$z = \frac{1.25\sqrt{12}}{2.25}$

$z = 1.92$

When $z = 1.92$ , it has a pvalue of 0.9725.

1 - 2*(1 - 0.9725) = 0.945

So we should use a confidence level of 94.5%.

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4 years ago

Which relation is a function of x?

jeka94

Answer:

1

Step-by-step explanation:

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4 years ago