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Leokris [45]
3 years ago
13

Select the correct answer. Determine whether the graph below represents an arithmetic or geometric sequence. A. The graph repres

ents geometric sequence because the successive y-values have a common difference of 2. B. The graph represents a geometric sequence because the successive y-values have a common ratio of 2. C. The graph represents an arithmetic sequence because the successive y-values have a common difference of 2. D. The graph represents an arithmetic sequence because the successive y-values have a common ratio of 2.
Mathematics
1 answer:
noname [10]3 years ago
5 0

Answer:

Its b

Step-by-step explanation:

I asked some friend they also agreed its b ive had this answer before also, But i still did researce just t make sure the answer i gave you is correct

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A bank wonders whether omitting the annual credit card fee for customers who charge at least $3,000 in a year would increase the
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Answer:

The 95% confidence interval for the mean amount of the increase is ($541.6, $588.4). This means that we are 95% sure that the mean amount of increase of all customers who charge at least $3,000 in a year is between these two values.

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 Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.025 = 0.975, so Z = 1.96.

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 = 1.96\frac{267}{\sqrt{500}} = 23.4

The lower end of the interval is the sample mean subtracted by M. So it is 565 - 23.4 = $541.6

The upper end of the interval is the sample mean added to M. So it is 565 + 23.4 = $588.4

The 95% confidence interval for the mean amount of the increase is ($541.6, $588.4). This means that we are 95% sure that the mean amount of increase of all customers who charge at least $3,000 in a year is between these two values.

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Answer:

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Step-by-step explanation:

(x-6)(x+2)=x^2-6x+2x-12=x^2-4x-12

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