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4 years ago

PLEASE ANSWER ASAP!!! I WILL GIVE YOU 5 STARS AND BRAINLIEST!!

Mathematics

1 answer:

ehidna [41]4 years ago

5 0

Answer:

j(x) = 2^(x - 5) - 2

Step-by-step explanation:

To the left of the y-axis we see that the blue graph is 2 units higher (vertically) than is the red graph. This translation is shown in the formula h(x) = e^x + 2. Beyond that, the graph of f(x) = 2^x has been translated 5 units to the right.

Thus, the "new" function is j(x) = 2^(x - 5) - 2

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Kaylan is flying to Alaska. When she boarded her plane in Texas the temperature was 82°. When she landed in Alaska the temperatu

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Answer:

I think the temperature went down 86° but I'm not sure

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3 years ago

Read 2 more answers

Suppose a 90% confidence interval for the mean salary of college graduates in a town in Mississippi is given by [$38,737, $50,46

JulsSmile [24]

Answer:

a. The point estimate was of $44,600.

b. The sample size was of 16.

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the difference between the two bounds, divided by 2.

a. What is the point estimate of the mean salary for all college graduates in this town?

Mean of the bounds, so:

(38737+50463)/2 = 44600.

The point estimate was of $44,600.

b. Determine the sample size used for the analysis.

First we need to find the margin of error, so:

$M = \frac{50463-38737}{2} = 5863$

Relating the margin of error with the sample size:

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

$\alpha = \frac{1 - 0.9}{2} = 0.05$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.05 = 0.95$ , so Z = 1.64.

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.

For this problem, we have that $\sigma = 14300, M = 5863$ . So

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

$5863 = 1.645\frac{14300}{\sqrt{n}}$

$5863\sqrt{n} = 1.645*14300$

$\sqrt{n} = \frac{1.645*14300}{5863}$

$(\sqrt{n})^2 = (\frac{1.645*14300}{5863})^2$

$n = 16$

The sample size was of 16.

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3 years ago

Four more than a number is more than 13

Pepsi [2]

X > 9 is the answer. This is the correct answer because you would subtract 4 from each side of the equation, which would leave X on one side and nine on the other. The inequality remains the same since you are not dividing at all by any negative numbers

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3 years ago

The number of errors in a textbook follow a Poisson distribution with a mean of 0.03 errors per page. What is the probability th

maksim [4K]

Answer:

The probability that there are 3 or less errors in 100 pages is 0.648.

Step-by-step explanation:

In the information supplied in the question it is mentioned that the errors in a textbook follow a Poisson distribution.

For the given Poisson distribution the mean is p = 0.03 errors per page.

We have to find the probability that there are three or less errors in n = 100 pages.

Let us denote the number of errors in the book by the variable x.

Since there are on an average 0.03 errors per page we can say that