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Nostrana [21]
3 years ago
8

Please help me Solve y+39=107

Mathematics
2 answers:
valkas [14]3 years ago
8 0

Answer:

<h3>y=68</h3>

Step-by-step explanation:

Let's solve your equation step-by-step.

y+39=107

Step 1: Subtract 39 from both sides.

y+39−39=107−39

y=68

Aleonysh [2.5K]3 years ago
8 0

Answer:

\huge\boxed{Y\:=\:68}

Step-by-step explanation:

y+39 = 107

y = 107-39

y = 68

Hope it helps!<3

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A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is 15 months. Someone in the res
AveGali [126]

Answer:

The decision rule is  

Fail to reject the null hypothesis

 The conclusion is  

There is no sufficient evidence to show that  the  designer's claim of a better shoe is supported by the trial results.

Step-by-step explanation:

From the question we are told that

  The population mean is  \mu = 15 \ months

   The sample size is  n =  25

   The sample mean is  \= x  = 17 \ months

   The standard deviation is  s = 5.5 \ months

Let assume the level of significance of this test is  \alpha  = 0.05

    The null hypothesis is  H_o :  \mu = 15

     The alternative hypothesis is  H_a : \mu  > 17

Generally the degree of freedom is mathematically represented as  

         df = n -1

=>       df = 25 -1

=>       df = 24

Generally the test statistics is mathematically represented as

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

=>   t = \frac{ 17 - 15 }{\frac{5.5}{\sqrt{25} } }

=>   t =  1.8182

Generally from the student t distribution table the probability of obtaining   t =  1.8182 to the right of the curve at a degree of freedom of df = 24  is  

    p-value  = P(t > 0.18182 ) = 0.4286

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

The decision rule is  

Fail to reject the null hypothesis

 The conclusion is  

There is no sufficient evidence to show that  the  designer's claim of a better shoe is  supported by the trial results.

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3 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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6 can be added as 1+5, 2+4, and 3+3. These pairs of factors multiply to 5, 8, and 9.

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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