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shusha [124]
3 years ago
11

What is the volume of a cylinder with height 4 and radius 2? Use 3.14 for pi.

Mathematics
1 answer:
Over [174]3 years ago
5 0

Answer:

50.27

v=3.14 (2 squared) 4

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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
BartSMP [9]

Answer:

The decision rule is  

Reject the null hypothesis  

Step-by-step explanation:

From the question we are told that

    The population mean is \mu =  5.6  \ pounds/inch^2

     The  sample size is  n =  160

      The sample mean is  \=  x =  5.7  \  pounds/ inch^2

     The variance is \sigma ^2 =  0.25

       The level of significance is  \alpha   =  0.01

The null hypothesis is  H_o  :  \mu  =  5.6

The alternative hypothesis is H_a :  \mu > 5.6

Generally the standard deviation is mathematically represented as

           \sigma =  \sqrt{\sigma ^2 }

=>         \sigma =  \sqrt{0.25  }  

=>         \sigma =  0.5  

Generally the test statistics is mathematically represented as

        z =  \frac{\= x  - \mu }{ \frac{\sigma}{\sqrt{n}  } }

=>     z =  \frac{5.7  - 5.6  }{ \frac{0.5 }{\sqrt{ 160 }  } }  

=>     z =  2.53

From the z table  the area under the normal curve to the left corresponding to  2.53   is

        p-value =  P(Z >  2.53 ) =0.0057

From the value obtained we see that the p-value  < \alpha hence

The decision rule is  

Reject the null hypothesis  

The conclusion is  

There is sufficient evidence to conclude that the believe  that the valve performs above the specifications is true

 

5 0
3 years ago
The farmer has a problem with too many mice in his barn. He brought in 363636 cats to catch the mice. Each cat caught 111 mice,
FromTheMoon [43]

Answer:

40585818

Step-by-step explanation:

thats an insane amount of anything but like, dam n

363636*111 to find out how many were caught, then that number plus 222222

6 0
3 years ago
Three girls are selling cases of popcorn to earn money for a band trip in their first week Emily sold 2 3/4 cases Brenda sold 4
ss7ja [257]
They have sold ten full cases
but have sold 10 and a half cases in total
8 0
3 years ago
PLEASE HELP URGENT 10 POINTS
snow_tiger [21]
All are correct

Explanation:since in none of the answers share the same the same X value and since the graph passes the vertical line test it is a function
8 0
2 years ago
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Which table corresponds to the graph of the function below?
sweet-ann [11.9K]
B corresponds to the graph.
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