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3 years ago

What is 430 rounded to the nearest 100

2 answers:

8 0

the answer would be 400. They said to round it to the 100th place. so you have to see if the tenths place is bigger or smaller than 5. Since 3 is smaller than 5, the answer would be 400.

Aleksandr-060686 [28]3 years ago

3 0

400, because 430 isnt close enough to 500 to round up.

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The distribution of the average amount of sleep per night gotten by college students is roughly bell-shaped with mean 412 minute

kirza4 [7]

Answer:

$P(X$

$P(z$

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 Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(412,68)$

Where $\mu=412$ and $\sigma=68$

We are interested on this probability

$P(X$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X$

And we can find this probability using the normal standard table or excel and we got:

$P(z$

4 0

2 years ago

What is the distance between P(-3,-25) and Q(50,-2)

Karolina [17]

$Dist = (x2-x1)^{2} + (y2-y1)^{2}$

above is the distance formula, plugging your numbers from P(x1,y1) and Q(x2,y2).

$Dist = \sqrt{(50-(-3))^{2} + (-2-(-25))^{2} }$
or $\sqrt{ 53^{2} + 23 ^{2} }$

4 0

2 years ago

317,362 x 129,324<br> Is it even or odd

Anna35 [415]

Answer:

41,042,523,288 It is even.

Step-by-step explanation:

To tell whether a number is even or odd, look at the number in the ones place. That single number will tell you whether the entire number is odd or even. An even number ends in 0, 2, 4, 6, or 8. An odd number ends in 1, 3, 5, 7, or 9.

5 0

2 years ago

100 POINTS PLEASE HELP!!!

solong [7]

Answer:

its 11 or its 5

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Do the ratios 3/4 and 6/8 form a proportion

arlik [135]

Answer:

Yes

Step-by-step explanation:

A proportion is an equation with a ratio on each side. And when you reduce 6/8 to the lowest form, it is 3/4

3 0

2 years ago