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2 years ago

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Write each number in standard form: (3 x 100,000) + (4 x 1000) + (2 x 10)

1 answer:

Zepler [3.9K]2 years ago

6 0

$3\times100000 = 3\times10^6 \\ 4\times1000 = 4\times10^3 \\ 2\times10 = 2\times10^1$

So the final statement would be:
$(3\times10^6) + (4\times10^3) + (2\times10^1)$

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2. Suppose over several years of offering AP Statistics, a high school finds that final exam scores are normally distributed wit

nirvana33 [79]

Answer:

By the Central Limit Theorem, the mean is 78, the standard deviation is $s = \frac{6}{\sqrt{n}}$ and the shape is approximately normal.

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.

Mean of 78 and a standard deviation of 6

This means that $\mu = 78, \sigma = 6$

Samples of n:

This means that the standard deviation is:

$s = \frac{\sigma}{\sqrt{n}} = \frac{6}{\sqrt{n}}$

What are the mean, standard deviation, and shape of the distribution of x-bar for n?

By the Central Limit Theorem, the mean is 78, the standard deviation is $s = \frac{6}{\sqrt{n}}$ and the shape is approximately normal.

6 0

2 years ago

(Please make sure your answer is 100% correct and Accurate)

I am Lyosha [343]

It would be 7813.50.

3 0

2 years ago

Taylin buys 5 ounces of tea leaves for $2.35. At this rate, how much money does she need to buy 12 ounces of tea leaves? (second

MissTica

Answer:

see below

Step-by-step explanation:

We can determine how much 12 ounces cost by using ratios

5 ounces 12 ounces

-------------- = -------------------

2.35 x

Using cross products

5x = 12*2.35

5x = 28.2

Divide each side by 5

5x/5 = 28.2/5

x =5.64

If she has 10 dollars

5 ounces y ounces

-------------- = -------------------

2.35 10

5*10 = 2.35y

50 = 2.35y

Divide each side by 2.35

50/2.35 = 2.35y/2.35

21.27659574 =y

She can buy 21.3 ounces

7 0

2 years ago

Read 2 more answers

Which of the following is the appropriate interpretation for when an event has a probability of 1? Group of answer choices We ar

ira [324]

9514 1404 393

Answer:

We are absolutely certain that the event will occur

Step-by-step explanation:

An event with probability 1 is certain to occur. There is no chance it will not occur.

We are absolutely certain that the event will occur.

6 0

2 years ago

Why is 59.47 > 59.3?

AysviL [449]

Answer:

59.47 is greater than 59.3

4 0

2 years ago

Read 2 more answers