Step-by-step explanation:
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<em>MARK</em><em> </em><em>ME</em><em> </em><em>AS</em><em> </em><em>A</em><em> </em><em>BRAINLI</em><em>E</em><em>ST</em>
Help me with this question plz! The equation t=0.07c represents the tax t, based on the cost c, of an item. Which part of the eq
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Answer:
<em>alternative hypothesis : H₁ :</em>
<em>Recent Gasoline surveys felt that gasoline price in Texas was significantly lower than the national average</em>
<em>Alternative Hypothesis : H₁: μ < $1.298 a gallon</em>
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given A recent gasoline survey said that the national average price of gasoline was $1.298 a gallon
<em>Population average μ= $1.298 a gallon</em>
<em>sample size 'n' = 37</em>
<em>Sample mean (x⁻) = $1.192 a gallon </em>
<em>Sample standard deviation 'S' = $0.0436</em>
<em>Null hypothesis :H₀ : μ = $1.298 a gallon</em>
<em>Alternative Hypothesis : μ < $1.298 a gallon</em>
<em>Degrees of freedom : ν = n-1= 37-1=36</em>
<em>t₀.₀₂₅ = 1.688</em>
<em>Test statistic </em>
<em> </em><em></em>
<em> </em><em></em>
<em> t = -14.8044</em>
<em>|t| = |-14.8044| > 1.688</em>
<em>Null hypothesis is rejected </em>
<em>Alternative hypothesis is accepted </em>
<em>Recent Gasoline surveys felt that gasoline price in Texas was significantly lower than the national average</em>
Look at the picture.
We have the similar triangles (AAA). Therefore the lengths of the sides are in proportion:
<em>multiply both sides by 8</em>
Alright, lets gets started.
I suppose , we are asked to find simple interest for above question.
Principal P = $1,250
Rate r = 5.7 %
Time t = 4 years
The formula for simple interest =
Hence simple interest
Simple interest
Simple interest = 285 $
Hence interest earned is $ 285. : Answer
Hope it will help :)