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2 years ago

I NEED HELP!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

jarptica [38.1K]2 years ago

7 0

Answer:

an element, feature, or factor that is liable to vary or change.

13a+1.50r=x

x is that amount you can get on

you can get on 15 rides !!!

Step-by-step explanation:

dmitriy555 [2]2 years ago

4 0

Answer:

an element, feature, or factor that is liable to vary or change.

13a+1.50r=x

x is that amount you can get on

you can get on 15 rides

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How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

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

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

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

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

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4 0

1 year ago

STRUGGLING, please help! Need help with a math problem. ty

strojnjashka [21]

f(3) = 7(3) - 6

g(2) = 3(2)

f(3) = 15

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15 - 6 = 9

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2 years ago

Suppose you start an annuity where you invent$2,000 at the beginning or each year and 4% interest is paid at the end of the year

dimulka [17.4K]

I believe $80 dollars would be 4% of 2,000

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2 years ago

Read 2 more answers

Beginning inventory: $14,320 Merchandise Purchases: $7,880 Goods available for sale: (a) Ending inventory: $11,250 Cost of goods

VikaD [51]

Answer:

$22,200

$10,950

Step-by-step explanation:

Goods available for sale = beginning inventory + Merchandise Purchases

$14,320 + $7,880 = $22,200

Ending inventory = goods available for sale - ending inventory

$22,200 - $11,250 = $10,950

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2 years ago

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TABLE / BOX

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