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MAXImum [283]
3 years ago
12

A pole that is 2.8 m tall casts a shadow that is 1 m long. At the same time, a nearby building casts a shadow that is 39.5 m lon

g. How tall is the building? round youre answer to the nearest meter
Mathematics
1 answer:
djverab [1.8K]3 years ago
4 0

Answer:

110.6 meters

Step-by-step explanation:

39.5 x 2.8 = 110.6

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Is the confidence interval affected by the fact that the data appear to be from a population that is not normally​ distributed?
sp2606 [1]

Answer:

D. No, because the sample size is large enough.

Step-by-step explanation:

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

If the sample size is higher than 30, on this case the answer would be:

D. No, because the sample size is large enough.

And the reason is given by The Central Limit Theorem since states if the individual distribution is normal then the sampling distribution for the sample mean is also normal.

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

If the sample size it's not large enough n<30, on that case the distribution would be not normal.

7 0
3 years ago
Will mark brainliest and give thirteen points
Lilit [14]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Given a group of 17 people in a party, we consider the number of times a person shakes hand with someone else. Show that there i
aev [14]

Answer:

Step-by-step explanation:

Given that there is a group of 17 people in a party.  There takes place a number of hand shakes between them.

To show that there is always two people who shake hands with the same total number of people.

If possible let each person did a different number of handshake.

We know that since there are 17 people, there cannot be more than 16 hand shakes for any one in the group.

Hence if different hand shakes must be 0,1,2...16

Consider the last person having 16 hand shakes. He has shaken hand with each other person in the group thus making it clear that no one could have done 0 hand shakes.   Since we get a contradiction, our assumption was wrong. That is, there is always two people who shake hands with the same total number of people.

8 0
3 years ago
Katie need to buy 1kg of oranges. If each orange weighs 100g, how many total oranges does she needs to buy.
lana [24]
1kg is 1000 grams. If each orange is 100g, 10 oranges is 1000g or 1kg. The answer is B or 10 oranges.
7 0
3 years ago
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On a coordinate plane, rectangle E F G H has points (2, 3), (5, 3), (5, 2), (2, 2).
ollegr [7]

Answer: (3,-5)

Step-by-step explanation:

It is

8 0
3 years ago
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