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gulaghasi [49]
3 years ago
11

A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance tra

veled (miles). The fitted regression is Time = −7.126 + .0214 Distance, based on a sample of 20 shipments. The estimated standard error of the slope is 0.0053. Find the critical value for a right-tailed test to see if the slope is positive, using α = .05.A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance traveled (miles). The fitted regression is Time = −7.126 + .0214 Distance, based on a sample of 20 shipments. The estimated standard error of the slope is 0.0053. Find the critical value for a right-tailed test to see if the slope is positive, using α = .05.
Mathematics
1 answer:
alina1380 [7]3 years ago
5 0

Answer:

1.734

Step-by-step explanation:

Given that:

A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance traveled (miles).

The fitted regression is Time = −7.126 + .0214 Distance

Based on a sample size n = 20

And an Estimated standard error of the slope = 0.0053

the critical value for a right-tailed test to see if the slope is positive, using ∝ = 0.05 can be computed as follows:

Let's determine the degree of freedom df = n - 1

the degree of freedom df = 20 - 2

the degree of freedom df =  18

At the level of significance ∝ = 0.05 and degree of freedom df =  18

For a right tailed test t, the critical value from the t table is :

t_{0.05, 18} = 1.734

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Step-by-step explanation:

\text{p - 6 = 5}

Since we want to get ' p ' on left hand side , remove the number ' - 6 '.

⇢ \text{p  -  6  + 6 = 5 + 6} { The opposite of -6 is +6 and whatever we do to one side , we must do to the another side. So, I added 6 on both sides }

⇢ \text{p = 11} { On the left hand side , 6-6 = 0. That's how we removed the 6 so just 'p' is left. On the right hand side , 5+6 = 11 }

---------

\underline{ \underline{ \text{CHECK  }}} :

Always check your answer by substituting your answer for the variable that you solved for. This guarantees you a right answer !

\text{p - 6 = 5}

⇢ \text{11 - 6 = 5}

⇢ \text{5 = 5}

\pink{ \underline{ \boxed{ \text{Our \: final \: answer :  \boxed{ \underline{ \tt{p = 11}}}}}}}

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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5 0
3 years ago
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