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Diano4ka-milaya [45]
2 years ago
7

What is the answer to the division problem

Mathematics
2 answers:
DerKrebs [107]2 years ago
8 0
The answer would be 39.84
PolarNik [594]2 years ago
5 0
The answer would be 39.84375
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The correct answer is b
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Which statement is true about this graph?
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D

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Industry standards suggest that 10 percent of new vehicles require warranty service within the first year. Jones Nissan in Sumte
borishaifa [10]

Answer:

a)  0.3874

b)  0.3874

c)  0.1722

d) Mean and Standard Deviation = 0.9

Step-by-step explanation:

This is binomial distribution problem that has formula:

P(x=r)=nCr*p^{r}*q^{n-r}

Here p is probability of success = 10% = 0.1

q is probability of failure, that is 90% = 0.9

n is total number, which is 9, so n = 9

a)

The probability that none requires warranty is r = 0, we substitute and find:

P(x=r)=nCr*p^{r}*q^{n-r}\\P(x=0)=9C0*(0.1)^{0}*(0.9)^{9-0}\\P(x=0)=0.3874

Probability that none of these vehicles requires warranty service is 0.3874

b)

The probabilty exactly 1 needs warranty would change the value of r to 1. Now we use the same formula and get our answer:

P(x=r)=nCr*p^{r}*q^{n-r}\\P(x=1)=9C1*(0.1)^{1}*(0.9)^{9-1}\\P(x=1)=0.3874

This probability is also the same.

Probability that exactly one of these vehicles requires warranty is 0.3874

c)

Here, we need to make r = 2 and put it into the formula and solve:

P(x=r)=nCr*p^{r}*q^{n-r}\\P(x=2)=9C2*(0.1)^{2}*(0.9)^{9-2}\\P(x=2)=0.1722

Probability that exactly two of these vehicles requires warranty is 0.1722

d)

The formula for mean is

Mean = n * p

The formula for standard deviation is:

Standard Deviation = \sqrt{n*p*(1-p)}

Hence,

Mean = 9 * 0.1 = 0.9

Standard Deviation = \sqrt{9*0.1*(1-0.1)}=0.9

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100 times every spot to the left is times 10
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