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Hunter-Best [27]
3 years ago
5

Please answer this question now

Mathematics
1 answer:
larisa [96]3 years ago
4 0

Answer:

1471.15

Step-by-step explanation:

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(15.34) The level of nitrogen oxides (NOX) in the exhaust of cars of a particular model varies Normally with mean 0.21 g/mi and
MrMuchimi

Answer:

a level of significance of 0.01 = 1%

Step-by-step explanation:

given

Z = 0.0001

mean μ=0.21 g/mi

variate x= 0.21 + 0.03

standard deviation σ= 0.05 g/mi.

N = sample population  20 cars

z = (x −μ )/[σ /√N  ]

Z =\frac{x −μ}{\frac{σ}{√N} }

Z = 0.03/ (0.05/√20) = 0.03/0.0111

Z = 2.63 +- 0.0001

Z=  2.6301  or 2.6299

checking the level of significance table from a statistical book gives

a level of significance of 0.01 = 1%

therefore the null hypothesis is accepted.

7 0
3 years ago
Answer this please i am stuck
Fiesta28 [93]

Answer:

adasdasdadsads

Step-by-step explanation:

8 0
3 years ago
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What is 25 ties 3 divited by 19
otez555 [7]

Answer:3.9

Step-by-step explanation:

3 0
2 years ago
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Misha wrote the quadratic equation 0=-x2+4x-7 in standard form. what is the value of c in her equation
Masteriza [31]

Answer:

Final answer is c=-7.

Step-by-step explanation:

Given equation is 0=-x^2+4x-7.

Now question says that Misha wrote the quadratic equation 0=-x2+4x-7 in standard form. Now we need to find about what is the value of c in her equation.

We know that standard form of quadratic equation is given by ax^2+bx+c=0.

compare given equation with the standard form, we find that -7 is written in place of +c

so that means +c=-7

or c=-7

Hence final answer is c=-7.

8 0
3 years ago
One pound of red grapes cost $2.42 Ella buys worth 0.5 pound how much does she spend on red grapes
Bess [88]

Answer:

1.21

Step-by-step explanation:

The cost of the grapes is the price per pound times the number of pounds

cost = 2.42 * .5

cost = 1.21

7 0
3 years ago
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