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Rufina [12.5K]
2 years ago
14

HELP!!!! If the probability of a getting 4/25 out of 200 people, what about 500 people?

Mathematics
1 answer:
mash [69]2 years ago
5 0

Answer:

123

Step-by-step explanation:

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The volume of a cube can be found using the equation V=S3, where V is the volume and Sis the measure of one side of the cube. Ma
bulgar [2K]

Answer:

s = ∛729 in³

Step-by-step explanation:

Since the volume is 729 in³, our equation can be plugged into:

<em>729 = s³</em>.

Isolate s by cube rooting each side: ∛729 = s.

5 0
3 years ago
12-n/7=-1 what y’all think the answer is
mestny [16]

Answer:

19

Step-by-step explanation:

12-n/7 = -1

Cross multiply

We have 12-n = -7

Collect like terms

12 + 7 = n

Therefore n = 19

8 0
3 years ago
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Please help 12+2x-14x+8=
bulgar [2K]

Answer:

-12x+20

Step-by-step explanation:

12+2x-14x+8

Add constants: 20+2x-14x

Add variables: 20-12x

Reorder: -12x+20

8 0
3 years ago
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10 x 10 - 4 divided by 7
TEA [102]

Answer:

13.7142857143

Step-by-step explanation:

If you need to round then do so, or i will comment the rounded version if needed.

3 0
2 years ago
Grades on a standardized test are known to have a mean of 1000 for students in the United States. The test is administered to 45
krok68 [10]

Answer:

a

The 95% confidence interval is 1003  <  \mu

b

Yes there is statistically significant evidence that students in Florida perform differently from other students in the United States

Step-by-step explanation:

From the question we are told that

   The population mean is  \mu =  1000

   The sample size is  n =  453

   The sample mean is  \= x  = 1013

    The standard deviation is s =  108

   

Given that the confidence level is  95% then the level of significance is mathematically represented as

            \alpha  =  100 - 95

=>         \alpha  =  5\%

=>          \alpha  = 0.05

The critical value  for \frac{\alpha }{2} obtained from the normal distribution table is          

          Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as

         E =  Z_{\frac{\alpha }{2} } *  \frac{s}{\sqrt{n} }

=>     E =  1.96 *  \frac{108}{\sqrt{453} }

=>      E = 9.946

Generally the 95% confidence interval is mathematically represented as

           \= x  - E  <  \mu <  \= x + E

=>         1013  - 9.946  <  \mu < 1013  + 9.946

=>         1003  <  \mu

Given that the population mean(1000) is not within the 95% confidence interval for l for the average test score for students in Florida, then it means that there is statistically significant evidence that students in Florida perform differently from other students in the United States

 

4 0
3 years ago
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