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3 years ago

7

The equation y = 13x represents the rate, in gallons per minute, that Tank A at an aquarium fills with water. The table represen

ts the rate that Tank B fills with water. Determine which tank fills faster.

1 answer:

Harlamova29_29 [7]3 years ago

6 0

Answer:

Tank A fills up faster.

Step-by-step explanation:

Tank A is y = 13x

Tank B is y = 11x

Plz mark as Brainliest!

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The mean yield of corn in the United States is about 135 bushels per acre. A survey of 40 farmers this year gives a sample mean

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Answer:

$z = \frac{138.8-135}{\frac{10}{\sqrt{40}}}= 2.403$

Step-by-step explanation:

Data given and notation

$\bar X=138.8$ represent the sample mean

$\sigma = 10$ represent the population standard deviation

$n=40$ sample size

$\mu_o =135$ represent the value that we want to test

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

Solution to the problem

We need to conduct a hypothesis in order to check if the true mean for the bushlels per acre is not 135, the system of hypothesis would be:

Null hypothesis: $\mu = 135$

Alternative hypothesis: $\mu \neq 135$

And the z statistic is given by:

$z= \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And replacing we got:

$z = \frac{138.8-135}{\frac{10}{\sqrt{40}}}= 2.403$

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