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german
3 years ago
13

Plz answer this guys

Mathematics
2 answers:
OlgaM077 [116]3 years ago
8 0

Answer D.)


Step-by-step explanation: becaues you KCF when dividing fractions


earnstyle [38]3 years ago
8 0
The answer is D I hope this helps
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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
3 years ago
REEEEEEEEEEEEEEEEEEEEEEEEEEEE
Anastaziya [24]

Answer:

im not writing all that lol

Step-by-step explanation:

So 1 would be 100%, 10/10 and 0 would be, 0/10 and 0% so for 50% for example would be 5/10, 0.5 and so on..

then just think of things that have a 100% chance and all the other percentages... example The sun rising tomorrow. and no chance 0% example the school flying away

5 0
2 years ago
Please helppppp<br> Consider the function f whose graph is shown above
gtnhenbr [62]

Answer:

It is C. Just look at the farthest points, and those are the numbers in your inequality.

7 0
3 years ago
For f(x) = -4x -9 evaluate for f(6.5)​
kolezko [41]

Answer:

f=−35

Step-by-step explanation:

<em>1.Simplify  4×6.5 to 26</em>

f=-26-9

<em>2. Simplify  -26-9 to  -35</em>

f=-35

7 0
3 years ago
Simplify: -3/8 +(-1/4)<br><br>A. -5/8<br><br>B. -1/2<br><br>C. -1/3<br><br>D. -1/8​
sveticcg [70]

Answer:

A

Step-by-step explanation:

Answer can be A).-5/8....

5 0
3 years ago
Read 2 more answers
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