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Andreyy89
3 years ago
9

What’s nine plus ten

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

19

Step-by-step explanation:

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A research team is testing whether a fuel aditive increases a car's gas mileage. The maker of the additive claims that the addit
Thepotemich [5.8K]

Answer:

Yes  there is sufficient evidence to  reject the company's evidence

Step-by-step explanation:

From the question we are told that  

   The sample size is  n =  25

    The mean is  \= x = 5.3 \ mpg

     The standard deviation is  \sigma = 1.8 \  mpg

    The z-score is  z = -1.94

The null hypothesis is  H_o : \mu = 6 \ mpg

The alternative hypothesis is  H_a :  \mu \ne 6

 Generally the p-value is mathematically evaluated as  

           p-value   =  2 * P( Z

From the z table  the area under the normal curve to the left corresponding to    -1.94  is

         P( Z

=>  p-value   =  2 * 0.02619

=>  p-value   =  0.052

Let assume the level of significance is  \alpha = 0.05

 Hence the  p-value > \alpha this mean that

   The  decision rule is  

Fail to reject the null hypothesis

The conclusion is

 There is sufficient evidence to  reject the company's evidence

 

5 0
3 years ago
Find the values of b <br>b²= 256<br>b=?​
ehidna [41]

Answer:

if b²=256

then b=16

....................

5 0
2 years ago
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A colony of bacteria is growing at a rate of 0.2 times its mass. Here time is measured in hours and mass in grams. The mass of t
arsen [322]

Answer:

See attachment below

Step-by-step explanation:

4 0
3 years ago
PLS HELP 6th grade, I WILL MARK U AS BRAINLIEST PLSSS
Sergio [31]

Answer:

1.75

Other Answer:

1 3/4

7 0
3 years ago
Explain how to use a best-fit line to make a prediction
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The line of best fit is like a slope. Slope is constant, so a hypothetical slope can help with predicting the future data of the graph.
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