3 years ago

Please help me with math and thank you

Mathematics

1 answer:

o-na [289]3 years ago

3 0

Answer: 864 square inches (choice A)

Work Shown:

area = length*width

area = 36*24

area = 864

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3 years ago

The mean is 47.1 and the standard deviation is 9.5 for a population. Using the Central Limit Theorem, what is the standard devia

MaRussiya [10]

Answer:

The standard deviation of the distribution of sample means for samples of size 60 is of 1.2264.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Standard deviation is 9.5 for a population.

This means that $\sigma = 9.5$

Sample of 60:

This means that $n = 60$

What is the standard deviation of the distribution of sample means for samples of size 60?

$s = \frac{\sigma}{\sqrt{n}} = \frac{9.5}{\sqrt{60}} = 1.2264$

The standard deviation of the distribution of sample means for samples of size 60 is of 1.2264.

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3 years ago

Find the measure of <br> A. 254<br> B. 53<br> C. 106<br> D. 127

SashulF [63]

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4 years ago

leslies family is going on vacation. they pack 3 suit cases that each weigh less than 30 pounds. they pack 3 suitcases that each

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3 years ago

The pitcher for the Robins throws a baseball at 90.0 miles per hour. The pitcher on the Bluebirds throws a baseball 121 feet per

aleksandrvk [35]

1 mile = 5280 ft...so 90 miles = 90 * 5280 = 475200 ft
60 seconds in 1 minute...and 60 minutes in 1 hr = 60 * 60 = 3600 sec/hr

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so the pitcher on the Robins throws faster at 132 ft/sec compared to the Bluebirds pitcher who throws at 121 ft/sec

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