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3 years ago

Round to the nearest million: 21,800,000

Mathematics

1 answer:

Eduardwww [97]3 years ago

5 0

21,800,000 rounded to the nearest million = 22,000,000

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sume that the change in daily closing prices for stocks on the New York Stock Exchange is a random variable that is normally dis

Darina [25.2K]

Answer:

0.1131 = 11.31% probability that a randomly selected stock will close up $0.75 or more.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Normally distributed with a mean of $0.35 and a standard deviation of $0.33.

This means that $\mu = 0.35, \sigma = 0.33$ .

What is the probability that a randomly selected stock will close up $0.75 or more?

This is 1 subtracted by the p-value of Z when X = 0.75. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.75 - 0.35}{0.33}$

$Z = 1.21$

$Z = 1.21$ has a p-value of 0.8869.

1 - 0.8869 = 0.1131

0.1131 = 11.31% probability that a randomly selected stock will close up $0.75 or more.

4 0

3 years ago

HELP ME PLEASE ASAP SAT

Nimfa-mama [501]

The answer is 4

4/x=6/x+2

⇒x=4

Not that hard :VV

4 0

3 years ago

Read 2 more answers

What is 0.76 +9.786

makvit [3.9K]

Answer:10.546

Step-by-step explanation:

0.76+9.786=10.546

7 0

4 years ago

A) 0.18<br> B) 12.5<br> C) 16 <br> D) 48.5

alexira [117]

I'm confused....so the numbers above are unnecceary?

8 0

3 years ago

Elizabeth changed her time for the mile walk from 30 minutes to 24 minutes. What was the percent of change?

vfiekz [6]

-20%

Basically, we are trying to find the change from 30 to 24 in terms of percent. We do this in three steps:

1) Find the difference between 30 and 24 as a number.

2) Divide the result from Step 1 by the starting number 30.

3) Multiply the result from Step 2 by 100 to get it in terms of percent.

The three steps above can be made into a formula. Thus, to find the percent change from 30 to 24, we use this formula:

((Y-X)/X)*100 = Percent Change

X is the starting number 30, and Y is the ending number 24 that it changed to. When we enter these numbers into the formula, we get:

((24-30)/30)*100 = -20.00%

Thus, the answer to the question "What is the Percent Change from 30 to 24?" is:

-20.00%

3 0

3 years ago