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3 years ago

8

tims dog, midnight, eats 28 cups of food in a week. midnight eats the same amount each day. in one day, how many more cups of fo

od will midnight eat than Rusty? explain.

1 answer:

ICE Princess25 [194]3 years ago

6 0

You did not mention rusty sorry can't help but midnight eats 4 cups a day

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$z=\frac{0.843-0.653}{\sqrt{0.748(1-0.748)(\frac{1}{300}+\frac{1}{300})}}=5.358$

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Data given and notation

$X_{1}=253$ represent the number with no defects in sample 1

$X_{2}=196$ represent the number with no defects in sample 1

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$n_{2}=300$ sample 2

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

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Concepts and formulas to use

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Alternative hypothesis: $p_{1} - p_{2} \neq 0$

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$z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}$ (1)

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z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

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Replacing in formula (1) the values obtained we got this:

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