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jekas [21]
3 years ago
12

Two spinners divided in 3 equal sections are labeled 1 through 3 what is the probability of both spinners landing on 2

Mathematics
1 answer:
Kobotan [32]3 years ago
4 0
The answer should b 25% probability
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A research center project involved a survey of 851 Internet users. It provided a variety of statistics on Internet users. (a) Th
kotykmax [81]

Answer:

The answer is "(0.9193924 , 0.9206076)".

Step-by-step explanation:

\text{sample proportion}\ (SP) = 0.92\\\\\text{sample size}\ n = 851\\\\\text{Standard error} \ SE = \sqrt{\frac{(SP \times(1 - SP)}{n})}\\\\

                              =  \sqrt{\frac{(0.92  \times (0.08)}{851})}\\\\= \sqrt{\frac{0.0736}{851}}\\\\=  \sqrt{8.648\times 10^{-5}}\\\\=0.00031

\text{CI level is}\ 95\% \\\\\therefore\\\\ \alpha = 1 - 0.95 = 0.05\\\\\frac{\alpha}{2} = \frac{0.05}{2} = 0.025\\\\ Z_c = Z_{(\frac{\alpha}{2})} = 1.96

Calculating the Margin of Error:

ME = z_{c} \times SE\\\\

       = 1.96 \times 0.00031\\\\ = 0.0006076

CI = (SP - z*SE, SP + z*SE)

      = (0.92 - 1.96 * 0.00031 , 0.92 + 1.96 * 0.00031)\\\\ = (0.92 - 0.0006076 , 0.92 +  0.0006076)\\\\= (0.9193924 , 0.9206076)

8 0
3 years ago
Which of the following expressions has a coefficient of 10 and a constant of 5?
makvit [3.9K]

Answer:

the first one

Step-by-step explanation:

because the X is constant

5 0
2 years ago
HELP!!<br> is {(-3,-6),(-2,-1),(-1,-0),(0,3),(1,15)} a function??
Goshia [24]
<h3>Answer: Yes it's a function</h3>

It's a function because we don't have any repeated x coordinates. Any given x input value leads to exactly one y output value.

The domain is {-3,-2,-1,0,1} which is the set of all x inputs.

The range is {-6, -1, 0, 3, 15} which is the set of y outputs.

7 0
2 years ago
Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in s
chubhunter [2.5K]
This is a polynomial of degree 4, because you have 4 roots real or imaginary:1st) x= 5 →(x-5)=0
2nd) x = - 3→(x+3) =0
3rd) x = -1+3i →(x+1-3i) = 0
and the 4th one that is not mentioned which is the conjugate of 
-1+3i, that is -1-3i (in any polynomial if a root has the form of a+bi, there is always a conjugate root = a-bi)
 
4th) x= -1-3i→(x+1+3i) = 0
Hence the polynomial =(x-5)(x+3)((x+1-3i)(x+1+3i)
Solving the above will give you (unless I am mistaken, pls recalculate):

x⁴-9x²-50x-150<u />
6 0
3 years ago
Read 2 more answers
a cog company produces 20 cogs a day, 4 of which are defective. Find the probability of selecting 4 cogs from the 20 produced wh
Simora [160]

Answer:

1/4845

Step-by-step explanation:

The probability of selecting a defective cog first is

1/5

The second cog is

3/19

The third cog is

1/9

And the fourth cog is

1/17

Multiplying these together we get

1/5 * 3/19* 1/9 * 1/17  = 1/4845

7 0
3 years ago
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