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3 years ago

Can someone please help me out with this its really urgent Ill mark brainliest

Mathematics

1 answer:

Alex73 [517]3 years ago

7 0

Answer:

smart dot company c=.50t+12

communication plus c=2.50t

Step-by-step explanation:

smart dot has the starting point of $12 per month already so that would be your y-intercept with the equation being y=mx+b , y being the cost m being the amount of money per hour, x being the time spent, and b being the starting cost.

So with that smart dot would be c=.50t+12

with communication plus not having that starting point it would just be c=2.50t

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Alternative hypothesis : $H_a : \mu >135$

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Test statistic : $\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

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$\overlien{x}$ = sample mean

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