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Anna [14]
3 years ago
15

1:12 p.m to 8:11 p.m

Mathematics
1 answer:
Helen [10]3 years ago
7 0

Answer:

7:59

Step-by-step explanation:

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It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 122 feet. A transportat
madreJ [45]

Complete Question

The complete question is shown on the first uploaded image

Answer:

the null hypothesis is  H_o  :  \mu =  122

the alternative hypothesis is H_a  :  \mu \ne  122

The test statistics is  t =  - 1.761

The p-value is  p =  P(Z  <  t ) = 0.039119

so

    p  \ge 0.01

Step-by-step explanation:

From the question we are told that

   The population mean is  \mu  = 122

     The sample size is  n=  38

    The sample mean is  \= x  =  116 \ feet

     The standard deviation is \sigma  =  21

     

Generally the null hypothesis is  H_o  :  \mu =  122

                the alternative hypothesis is H_a  :  \mu \ne  122

Generally the test statistics is mathematically evaluated as

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

substituting values

         t =  \frac { 116 -  122 }{\frac{ 21 }{ \sqrt{ 38} } }

         t =  - 1.761

The p-value is mathematically represented as

      p =  P(Z  <  t )

From the z- table  

     p =  P(Z  <  t ) = 0.039119

So  

     p  \ge 0.01

 

         

     

           

4 0
3 years ago
How to find perimeter with equations
erastova [34]

Step-by-step explanation:

In blue colour square

Perimeter= 4 × side

= 4 (3x +7)

=12x +28 unit

In green colour square

Perimeter= 4 × side

= 4 ( 5x+1)

= 20x +4 unit

5 0
2 years ago
Read 2 more answers
The cost of 24 bottles of water is $6. Which expression shows how to find the cost of 10 bottles of water?
yaroslaw [1]
So first you need to find out how much one water bottle cost. 
6/24= 0.25 
Okay now you need to find how much it would cost for 10. 
so you would times 10 by $0.25: 
10*0.25= $2.50 
So $2.50 would be you answer. 
Hope that helps!! 
Have a wonderful day!!
4 0
3 years ago
6 WILL GIVE BRAINLIEST
ad-work [718]

Answer:

Step-by-step explanation:

4 0
3 years ago
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Which expression can be used to convert 100 USD to Japanese yen?
gizmo_the_mogwai [7]
100 USD *(* means times) the current exchange rate which is <span>110.39 right now.</span>
7 0
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