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4 years ago

PLEASE HELP AS SOON AS POSSIBLE

Mathematics

1 answer:

VladimirAG [237]4 years ago

6 0

Answer:

The third pattern is the answer.

Step-by-step explanation:

The + represents A, the rectangle represents B, and the arrow represents C. ABBC means there's one +, two rectangles, and one arrow. Then, repeat to make the pattern.

I hope this helped! :-)

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bearhunter [10]

1)4

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3 years ago

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The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence

JulsSmile [24]

Answer:

The 95% confidence interval for the population mean weight of newborn elephants is between 242.12 pounds and 245.88 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:

$\alpha = \frac{1-0.95}{2} = 0.025$

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 $1-0.025 = 0.975$ , so $z = 1.96$

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.

$M = 1.96*\frac{15}{244} = 1.88$

The lower end of the interval is the sample mean subtracted by M. So it is 244 - 1.88 = 242.12 pounds.

The upper end of the interval is the sample mean added to M. So it is 244 + 1.88 = 245.88 pounds

The 95% confidence interval for the population mean weight of newborn elephants is between 242.12 pounds and 245.88 pounds.

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4 years ago

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zloy xaker [14]

Answer:

Step-by-step explanation:

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3 years ago

In a sample of n = 6 scores, the smallest score is X = 3, the largest score is X = 10, and the mean is M = 6. If the largest sco

Murrr4er [49]

Answer:

Step-by-step explanation:

Given that in a sample of n = 6 scores, the smallest score is X = 3, the largest score is X = 10

Mean = 6

Since mean = 6 we get sum of all the 6 scores = $6(6) = 36$

Now II part says 10 is changed to 20

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Changed value = 10

Adjusted value =26

Add: new value =22

New sum =48

So we have sum = 48

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(This can also be done using the formula

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3 years ago

If f(x)=3-2x and g(x)=1/x+5, What is the value of (f/g) (8)?

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(f/g)(8)=f(8)/g(8)

find f(8) and g(8) to mke it easier

f(8)=3-(8)=3-2(8)=3-16=-13

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4 years ago

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