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3 years ago

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A model rocket was placed on the Lincoln football field and launched. The rocket follows the path r(x)=-2(x-2)(x-12) where x=hor

izontal yards traveled and y= height in feet. From what yard line was the rocket launched from?how do you know?

1 answer:

Bond [772]3 years ago

6 0

Step-by-step explanation:

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The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to det

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Answer:

0.077994

Step-by-step explanation:

Given that the owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club.

$H_0: Mean = 30\\H_a: Mean >30$

(Right tailed test)

Sample size = $n=250$

Sample mean = 30.45

Mean difference = $30.45-30=0.45\\$

Sample std dev s = 5

Sample std error = $\frac{5}{\sqrt{n} } =\frac{5}{\sqrt{250} } \\=0.3163$

Test statistic = Mean diff/std error = $=\frac{0.45}{0.3163} =1.423$

Since population std deviation is not know we use t test

p value = $0.077994$

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3 years ago

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levacccp [35]

Daniel is correct, but Kelly is not

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I subtracted 375 not added

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4 years ago

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Please help will reward a lot of points and brainlest for the best answer

yawa3891 [41]

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3 years ago

T-2(3-2t)=2t+9 <br>algebra2

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T-2(3-2t)=2t+9
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