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MaRussiya [10]
3 years ago
14

If Oscar spins this spinner 100 times, approximately how many times will it land on blue?

Mathematics
2 answers:
Stella [2.4K]3 years ago
6 0

Answer:

50

Step-by-step explanation:

The chart is 50% of blue. Meaning, If you spin the spinner 100 times. it most likely will hit blue 50 times out of 100.

ziro4ka [17]3 years ago
3 0

50 because 50/100=2/4 and 2/4 is blue on the circle

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Solving fp<br> Algebra 2<br> I do not understand how to solve this, could someone please explain?
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f(x) =  \sqrt{x + 2}
What's The Fixed Point? Well, Let's Assume X=0, this is our point.

f(0) =  \sqrt{0 + 2}  \\ f(0) =  \sqrt{2}  \\ this \: is \: our \: fixed \: point \:  \\ (0, \sqrt{2} )
OR

f(p) =  \sqrt{p + 2}  \\  \\  or \:  \sqrt{x + 2}  = 0 \\ ( \sqrt{x + 2} ) ^{2}  =  {0}^{2}  \\ x + 2 = 0 \\ x  =  - 2
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The answer is letter c
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3 years ago
Read 2 more answers
A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec
VMariaS [17]

Answer:

19.1-3.355\frac{1.5}{\sqrt{9}}=17.42    

19.1+3.355\frac{1.5}{\sqrt{9}}=20.78    

And the best option would be:

C. [17.42,20.78]

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

\bar X=19.1 represent the sample mean

\mu population mean (variable of interest)

s=1.5 represent the sample standard deviation

n=9 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=9-1=8

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,8)".And we see that t_{\alpha/2}=

Now we have everything in order to replace into formula (1):

19.1-3.355\frac{1.5}{\sqrt{9}}=17.42    

19.1+3.355\frac{1.5}{\sqrt{9}}=20.78    

And the best option would be:

C. [17.42,20.78]

5 0
3 years ago
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vichka [17]

Answer:

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Step-by-step explanation:

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3 years ago
James used a substitution to solve this system of equations. Which equation could be a result of his first step? 2x+3y=12 y=x+1.
Blizzard [7]

Answer:

x = 1.5

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Step-by-step explanation:

to solve this system of equation using the substitution methods we say let

2x+3y=12................................... equation 1

y=x+1.5..................................... equation 2

substitute equation 2  into equation 1

2x+3y=12................................... equation 1

2x + 3( x + 1.5) = 12

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put x = 1.5 into equation 2

y=x+1.5..................................... equation 2

y = 1.5 + 1.5

y = 3

therefore the value of x = 1.5 and y = 3 respectively.

5 0
3 years ago
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