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Olin [163]
3 years ago
10

30 POINTS please help!! The scores of first-time players of a popular video game are recorded. The results follow a normal distr

ibution curve. The mean is 12,388 points with a standard deviation of 953 points. What is the probability that a randomly selected player’s score is more than 11,950 points?
A.
0.3228

B.
–0.46

C.
0.1550

D.
0.6772
Mathematics
2 answers:
Trava [24]3 years ago
6 0
Your answer is D, 0.6772, hope that helps
Murrr4er [49]3 years ago
4 0

Answer:

0.6772

Step-by-step explanation:

P(X>11950)=P(x-u>11950-12388

p(x-u/o)>11950-12388/953=-0.46

p(X>11950)=P(Z>-0.46)

p(Z>-0.46)=0.6772

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Rosa is attending an event where prizes are being given away. The probability of winning a T‐shirt is 0.89 and the probability o
vagabundo [1.1K]

Answer:

It is very likely that Rosa wins both prizes.

Step-by-step explanation:

The probability of winning a T‐shirt is 0.89 and the probability of winning a $20 gift certificate is 0.05. Which statement correctly describes the chances of Rosa winning a T‐shirt or a $20 gift certificate?

We have these three possibe outcomes.

Win t-shirt(0.89 probability) and lose the gift certiciate(1 - 0.05 = 0.95 probability)

Lose t-shirt(0.11 probability) and win the gift certiciate(0.05 probability).

Win both.

So

p = 0.89*0.95 + 0.11*0.05 + 0.89*0.05 = 0.8955

0.8955 = 89.55% probability of Rosa winning a T‐shirt or a $20 gift certificate, which is considered a very likely probability. So the answer is:

It is very likely that Rosa wins both prizes.

5 0
3 years ago
Explain WHAT WOULD HAPPEN TO motion IF friction DID NDT EXIST.
MA_775_DIABLO [31]

Answer:

If friction did not exist, it would be hard for us to slow down in running, or putting breaks on a car, and more!

If friction did not exist, your car will slide down the road even if you try your best to put the brakes on a car. Friction is a very important force to slow down things that are moving very fast

Step-by-step explanation:

Hoped this helped.

GeniusUser

5 0
3 years ago
the sum of three consecutive integers is three times the second integer. show that this is true for the three consecutive intege
sdas [7]

Step-by-step explanation:

7+8+9=24

second integer is 8 so 8*3=24

3 0
2 years ago
If you do all o these I will give you 5000 points every month
stealth61 [152]
1. find the LCD of 3 and 4 (12). so now your fractions are 5 4/12 and 3 9/12 perimeter is 2l + 2w so 2 (5 4/12) + 2( 3 9/12) = 10 4/12 + 7 6/12 = 17 10/12 or 17 5/6. this is reasonable because that the average perimeter of a sandbox.
2. LCD again is 12, so the fractions are 5 10/12 and 2 1/12. turn those into mixed fractions and get 70/12 and 25/12. 45/12 or 3 3/4. So she babysits 3 3/4 hours during the week.
3. The LCD for this is 8. now the fractions are 2/8 and 1 7/8 or 15/8. add 15/8 and 2/8 to get 17/8 or 2 1/8. He is using a total of 2 1/8 cups of flour.
4. 0.2
5. 0.054
6. 0.024
5 0
3 years ago
Read 2 more answers
Through:(4,4),parallel to y=-6x +5
ad-work [718]

For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

y = mx + b

Where:

m: It's the slope

b: It is the cut-off point with the y axis

In this case we have the following equation of the line:

y = -6x + 5

Where:

m = -6

By definition, if two lines are parallel then their slopes are equal. Thus, a parallel line will have an equation of the form:

y = -6x + b

Substitute the given point(x, y) :( 4,4)to find "b":

4 = -6 (4) + b\\4 = -24 + b\\4 + 24 = b\\b = 28

Finally, the equation of the requested line is:

y = -6x + 28

Answer:

y = -6x + 28

6 0
3 years ago
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