SCALE FACTOR question
1 answer:
You might be interested in
<span> For this case, the first thing we must do is define variables.
We have then:
x: number of devices.
Y: plan charge
For the current plan we have:
</span>
<span> For the new plan we have:
</span>
<span> Since we want the new plan to be smaller than the current plan, then we have:
</span>
<span> From here, we clear the value of x:
</span>
<span> Answer:
x <18
Note: The graph is correct</span>
We have then:
x: number of devices.
Y: plan charge
For the current plan we have:
</span>
<span> For the new plan we have:
</span>
<span> Since we want the new plan to be smaller than the current plan, then we have:
</span>
<span> From here, we clear the value of x:
</span>
<span> Answer:
x <18
Note: The graph is correct</span>
Answer:
<em>The calculated t- value = 1.11 > 2.89 at 0.025 level of significance</em>
<em>Null hypothesis is rejected </em>
<em>The engineer designed the valve such that it would produce a mean pressure is not equal to 5.4</em>
Step-by-step explanation:
<u><em>Step(i):-</em></u>
<em>Given mean of the Population (μ) = 5.4</em>
<em>Given sample size 'n' = 9</em>
<em>Mean of the sample (x⁻) = 5.7</em>
<em>Standard deviation of the sample (s) = 0.81</em>
<u><em>Step(ii):-</em></u>
<em>Null Hypothesis: H₀:</em> The engineer designed the valve such that it would produce a mean pressure of 5.4
H₀: μ = 5.4
<em>Alternative Hypothesis : H₁:</em> μ ≠ 5.4
Level of significance = 0.025
Test statistic
t = 1.11
<em>Degrees of freedom </em>
<em>ν = n-1 = 9-1 =8</em>
t₀.₀₁₅ , ₈ = 2.89
<em>The calculated t- value = 1.11 > 2.89 at 0.025 level of significance</em>
<em>Null hypothesis is rejected </em>
<em>The engineer designed the valve such that it would produce a mean pressure is not equal to 5.4</em>
<em></em>
<em />