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Alex Ar [27]
3 years ago
5

Jake wanted to measure the height of the Great Sphinx of Giza. He placed a mirror on the ground and then walked backwards until

he was able to see the top of the statue in the mirror. If his eyes were 5.5 feet above the ground, how tall is the statue, to the nearest foot?
A. 65 ft
B. 87 ft
C. 103 ft
D. 137 ft
Mathematics
1 answer:
irina1246 [14]3 years ago
7 0
Jake wanted to measure the height of the Great Sphinx of Giza. He placed a mirror on the ground and then walked backwards until he was able to see the top <span>of the statue in the mirror. If his eyes were 5.5 feet above the ground, the statue is 87 ft. The answer is letter B.</span>
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A tablet PC contains 3217 music files. The distribution of file size is highly skewed with many small files. Suppose the true me
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Answer:

Let X the random variable who represents the file sizeof music. We know the following info:

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We select a sample of n=50 nails. That represent the sample size.  

Since the sample size is large enough n >30, we can use the central limit theorem. From this theorem we know that the distribution for the sample mean \bar X is given by:

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

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Step-by-step explanation:

Previous concepts

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".  

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".

Let X the random variable who represents the file sizeof music. We know the following info:

\mu =2.3,\sigma =3.25

We select a sample of n=50 nails. That represent the sample size.  

Since the sample size is large enough n >30, we can use the central limit theorem. From this theorem we know that the distribution for the sample mean \bar X is given by:

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

And we can approximate the distribution of the sample mean as a normal distribution and no matter if the distribution for X is right skewed or no.

8 0
3 years ago
What is the answer to 2×1/6=
Gennadij [26K]
2\times\frac{1}{6}=\frac{2}{6}=\frac{2\times1}{2\times3}=\frac{1}{3}
8 0
3 years ago
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The portions of a house that need to be heated can be modeled by one rectangular prism with a length of 45 feet, a width of 20 f
nignag [31]

Answer:

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Step-by-step explanation:

= (45)(20)(10) + (350)(9)

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= 12150 ft^3

4 0
2 years ago
A suit cost $95 Barry has a discount coupon for 10 %off and the city has 4.5%sales tax .what is the final cost of the suit?
torisob [31]
The final price would be 89.35
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3 years ago
You are painting the root of a boathouse. You are going to place the base of a ladder 12 feet from the boathouse. How long does
jolli1 [7]

Answer:

37 ft

Step-by-step explanation:

The ladder forms a right triangle as it elan's against the wall of the boat house.

Thus, the length of the ladder can be determined using Pythagorean theorem.

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