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atroni [7]
3 years ago
6

Please help I mark brainliest... A theme park has many attractions, one of which is the roller coaster. Are the people who ride

the roller coaster the population, or a sample, of
the theme park? Explain.
00:00
Population. They are all the people at the theme park.
00:00
Sample. They are a subset of all the people at the theme park.
00:00
Both population and sample. They are all the people at the theme park.
00:00 -
Neither population nor sample. They are not the people at the theme park.
Mathematics
1 answer:
Bumek [7]3 years ago
7 0

Answer:

Sample

Step-by-step explanation:

The people that are riding the roller coaster are only a select few people out of everyone in the entire park.

If you think about it this way, there are other rides in the park (there might be bumper cars and a Ferris wheel, etc.), so the people on the roller coaster are just a small group of the entire population of people in the park

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A ​$270 suit is marked down by 30​%. Find the sale price.
stepan [7]
$81.00

30% of 270 = 0.3 × 270 = 81
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2 years ago
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Need answer ASAP pls it’s important
Sliva [168]

Hey buddy I am here to help!

total outcomes r = 36

multiples of 3 = 3,6

total outcomes of multiple fo 3 = 12

12/36 = 1/3

1/3 is the answer

Hope it helps!

Plz mark me brainliest!

6 0
3 years ago
I'm stuck on this homework question. I forgot the formula to find the side. This is 9th grade geometry.
dexar [7]

Answer:

x = 2root(22)

see image.

Step-by-step explanation:

The triangle shown is one big triangle cut into two more smaller triangles: one medium-sized and one smaller.

ALL THREE TRIANGLES ARE SIMILAR BY AA.

Set the two smaller triangles up so you can see the corresponding sides. x is the short leg in one triangle and it is the long leg in the smallest triangle. Set up a proportion.

22/x = x/4

crossmultiply

x^2 = 22•4

x^2 = 88

square root both sides.

x = sqroot(88)

x = 2sqroot(22)

see image.

3 0
2 years ago
PLEASE HELP I BEG YOUUUUUU
Maru [420]
<h3>✽ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ✽</h3>

➷ Substitute in the value:

840 - 52.5(14) = 105

Since e(14) = 105, the elevation of the cable car would be 105 meters from the ground 14 minutes after it begins descending  from the top of the hill

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7 0
3 years ago
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It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken if the desir
Ksju [112]

Answer:

We need a sample size of at least 75.

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, we 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.

The standard deviation is the square root of the variance. So:

\sigma = \sqrt{484} = 22

With a .95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is

We need a sample size of at least n, in which n is found when M = 5. So

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

5 = 1.96*\frac{22}{\sqrt{n}}

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\sqrt{n} = \frac{43.12}{5}

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(\sqrt{n})^{2} = (8.624)^{2}

n = 74.4

We need a sample size of at least 75.

6 0
3 years ago
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