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Ierofanga [76]
3 years ago
10

The table shows the costs of playing several carnival games. You have $20 and play each game twice. How much money do you have l

eft?
Ring Toss $1
Balloon Pop $2.00
Basketball $2.25
Mathematics
2 answers:
andreev551 [17]3 years ago
8 0
You will have $9.50 left
givi [52]3 years ago
6 0
I think it would be $9.50
Because
Ring toss x2 is 2.00
Balloon pop x2 is 4.00
Basketball x2 is 4.50
All together is 10.50
20-10.50= 9.50
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Please please help!!!! According to the probability distribution below, what is the expected value of X? X 0 1 2 3 4 5 P(X) 0.3
Novay_Z [31]

Answer:

D.) The expected value is 1.78

Step-by-step explanation:

The expected value of a probability distribution is evaluated using the formula.

Expected Value, E(X)=\sum^{n}_{i=1}x_iP(x_i)

Therefore, from the given probability distribution, we have:

E(X)=(0*0.3)+(1*0.2)+(2*0.16)+(3*0.2)+(4*0.04)+(5*0.1)

E(X)=1.78

The Expected value of X is 1.78.

The correct option is D.

4 0
3 years ago
Several years​ ago, 39​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students r
BaLLatris [955]
<h2>Answer with explanation:</h2>

Let p be the population proportion  of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive.

Given : Several years​ ago, 39​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive.

Set hypothesis to test :

H_0: p=0.39\\\\H_a :p\neq0.39

Sample size : n= 1055

Sample proportion : \hat{p}=\dfrac{466}{1055}=0.441706161137\approx0.44

Critical value for 95% confidence : z_{\alpha/2}=1.96

Confidence interval : \hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}

0.44\pm (1.96)\sqrt{\dfrac{0.39(1-0.39)}{1055}}\\\\0.44\pm0.0299536805135\\\\0.44\pm0.03\\\\=(0.44-0.03, 0.44+0.03)\\\\=(0.41,\ 0.47)

Since , Confidence interval does not contain 0.39.

It means we reject the null hypothesis.

We conclude that 95​% confidence interval represents evidence that​ parents' attitudes toward the quality of education have changed.

8 0
3 years ago
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Alexxx [7]

Answer:

y-intercept is ( 0 , 5 )

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Help please. (12 points)
Sphinxa [80]
 because the symbol is a less than sign < the blue area needs to be below the red line and does not include the solution to Y ( if it included Y it would be a ≤ symbol.
 When the solution isn't included, it is a dashed line.
 so the answer would be D



6 0
3 years ago
Find the value of m. 4(m-2) = 24
slega [8]

4(m-2)=24

4m-8=24 distributive property

add 8 to each side

4m=32

divide each side by 4

m=8

4 0
3 years ago
Read 2 more answers
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